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Diff for /capa/capa51/pProj/capaCommon.c between versions 1.13 and 1.28

version 1.13, 2000/07/07 18:33:03 version 1.28, 2006/07/28 06:38:13
Line 2 Line 2
    Copyright (C) 1992-2000 Michigan State University     Copyright (C) 1992-2000 Michigan State University
   
    The CAPA system is free software; you can redistribute it and/or     The CAPA system is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as     modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the     published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.     License, or (at your option) any later version.
   
    The CAPA system is distributed in the hope that it will be useful,     The CAPA system is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of     but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.     General Public License for more details.
   
    You should have received a copy of the GNU Library General Public     You should have received a copy of the GNU General Public
    License along with the CAPA system; see the file COPYING.  If not,     License along with the CAPA system; see the file COPYING.  If not,
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,     write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.     Boston, MA 02111-1307, USA.
Line 48  int     yyparse(); Line 48  int     yyparse();
 extern  FILE *yyin;  extern  FILE *yyin;
 extern  void yyrestart();  extern  void yyrestart();
   
   extern  FILE *dfp;
   
 /*----------------------------------------------------------*/  /*----------------------------------------------------------*/
 /*  RETURN: -1 file error                                   */  /*  RETURN: -1 file error                                   */
 /*           0 success                                      */  /*           0 success                                      */
Line 1447  void capa_get_due_date(char *date_str,T_ Line 1449  void capa_get_due_date(char *date_str,T_
   if ((duration > 0) && (student_number!=NULL)) {    if ((duration > 0) && (student_number!=NULL)) {
     if (capa_get_login_time(student_number,set,&logintime)==1) {      if (capa_get_login_time(student_number,set,&logintime)==1) {
       duetime=logintime+duration;        duetime=logintime+duration;
       due_time_tm=localtime(&duetime);        if (compare_datetime(duetime,current->due_date)==-1) {
       sprintf(date_str,"%04d/%02d/%02d %02d:%02d",((due_time_tm->tm_year)+1900),   due_time_tm=localtime(&duetime);
       due_time_tm->tm_mon+1,due_time_tm->tm_mday,due_time_tm->tm_hour,   sprintf(date_str,"%04d/%02d/%02d %02d:%02d",((due_time_tm->tm_year)+1900),
       due_time_tm->tm_min);   due_time_tm->tm_mon+1,due_time_tm->tm_mday,due_time_tm->tm_hour,
    due_time_tm->tm_min);
         } else {
    strncpy(date_str,current->due_date,DATE_BUFFER); 
         }
       return;        return;
     }      }
   }     } 
Line 2448  check_input_usymb(u_symb)char *u_symb; Line 2454  check_input_usymb(u_symb)char *u_symb;
 /*          num_p  : the numerical part in string */  /*          num_p  : the numerical part in string */
 /*          unit_p : the unit string */  /*          unit_p : the unit string */
 /* num_p is used to calculate sig figs */  /* num_p is used to calculate sig figs */
 /* return :   0  empty string          */  /* return :  -1  invalid string        */
   /*            0  empty string          */
 /*            1  number without units  */  /*            1  number without units  */
 /*            2  empty number with units */  /*            2  empty number with units */
 /*            3  number with units       */  /*            3  number with units       */
Line 2493  char *buf;double *num; char *num_p; char Line 2500  char *buf;double *num; char *num_p; char
     while( isspace(buf[idx]) ) { idx++; }      while( isspace(buf[idx]) ) { idx++; }
     sscanf(num_str, "%lg", &result);  /* put the numerical value into a double variable */      sscanf(num_str, "%lg", &result);  /* put the numerical value into a double variable */
     errcode = errcode | 1;      errcode = errcode | 1;
   } else if( buf[idx] == 'x' || buf[idx] == 'X') { /* optional x or X part */    } else if( buf[idx] == 'x' || buf[idx] == 'X' || buf[idx] == '*') { /* optional x or X part */
     idx++; /* skip x or X */      idx++; /* skip x or X */
     while( isspace(buf[idx]) ) { idx++; }      while( isspace(buf[idx]) ) { idx++; }
           
     e_part = 1.0;  /* default power */      e_part = 1.0;  /* default power */
     base_str[b_idx] = 0; /* initialize base_str[] */      base_str[b_idx] = 0; /* initialize base_str[] */
     while( isdigit(buf[idx]) || buf[idx] == '.' ) { /* should start with a digit or . */      if( buf[idx] == '1' && buf[idx+1] == '0') {
       base_str[b_idx++] = buf[idx++];        base_str[b_idx++] = buf[idx++];
         base_str[b_idx++] = buf[idx++];
       } else {
         return (-1);
     }      }
     base_str[b_idx] = 0; /* terminate base_str[] */      base_str[b_idx] = 0; /* terminate base_str[] */
     while( isspace(buf[idx]) ) { idx++; } /* skip over white spaces */      while( isspace(buf[idx]) ) { idx++; } /* skip over white spaces */
Line 2514  char *buf;double *num; char *num_p; char Line 2524  char *buf;double *num; char *num_p; char
       while( isspace(buf[idx]) ) { idx++; }        while( isspace(buf[idx]) ) { idx++; }
       if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' )  {        if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' )  {
         exp_str[e_idx] = 0;  /* initialize exp_str[], again */          exp_str[e_idx] = 0;  /* initialize exp_str[], again */
         while( isdigit(buf[idx]) || buf[idx] == '.' || buf[idx] == '+' || buf[idx] == '-' ) {          while( isdigit(buf[idx]) /*|| buf[idx] == '.'*/ || buf[idx] == '+' || buf[idx] == '-' ) {
           exp_str[e_idx++] = buf[idx++];            exp_str[e_idx++] = buf[idx++];
         }          }
         exp_str[e_idx] = 0;  /* terminate exp_str[] */          exp_str[e_idx] = 0;  /* terminate exp_str[] */
Line 2548  char *buf;double *num; char *num_p; char Line 2558  char *buf;double *num; char *num_p; char
     while( isspace(buf[idx]) ) { idx++; }      while( isspace(buf[idx]) ) { idx++; }
     if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' )  {      if( isdigit(buf[idx]) || buf[idx] == '+' || buf[idx] == '-' )  {
         exp_str[e_idx] = 0;          exp_str[e_idx] = 0;
         while( isdigit(buf[idx]) || buf[idx] == '.' || buf[idx] == '+' || buf[idx] == '-' ) {          while( isdigit(buf[idx]) /*|| buf[idx] == '.'*/ || buf[idx] == '+' || buf[idx] == '-' ) {
           exp_str[e_idx++] = buf[idx++];            exp_str[e_idx++] = buf[idx++];
         }          }
         exp_str[e_idx] = 0;          exp_str[e_idx] = 0;
Line 2559  char *buf;double *num; char *num_p; char Line 2569  char *buf;double *num; char *num_p; char
     }      }
     sscanf(exp_str, "%lg", &e_part);      sscanf(exp_str, "%lg", &e_part);
     sscanf(num_str, "%lg", &n_part);      sscanf(num_str, "%lg", &n_part);
       if( n_part != 10 ) {
         return (-1);
       }
     result = pow(n_part,e_part);      result = pow(n_part,e_part);
     errcode = errcode | 1;      errcode = errcode | 1;
   } else {  /* number unit */    } else {  /* number unit */
Line 2632  answers_string(mode, p)int mode;Problem_ Line 2645  answers_string(mode, p)int mode;Problem_
              if(len_dd == 0 ) {  /* no unit_str */               if(len_dd == 0 ) {  /* no unit_str */
                sprintf(ans_str," %s [%s,%s]\n\n", str_aa,str_bb,str_cc);                 sprintf(ans_str," %s [%s,%s]\n\n", str_aa,str_bb,str_cc);
              } else {               } else {
                sprintf(ans_str," %s [%s,%s] $%s$\n\n", str_aa,str_bb,str_cc,p->unit_str);                 sprintf(ans_str," %s [%s,%s] $\\mathrm{%s}$\n\n", str_aa,str_bb,str_cc,p->unit_str);
              }               }
              capa_mfree((char *)str_aa);                capa_mfree((char *)str_aa); 
      capa_mfree((char *)str_bb);        capa_mfree((char *)str_bb); 
Line 2654  answers_string(mode, p)int mode;Problem_ Line 2667  answers_string(mode, p)int mode;Problem_
              if(len_dd == 0 ) {  /* no unit_str */               if(len_dd == 0 ) {  /* no unit_str */
                sprintf(ans_str," %s\n", str_bb);                 sprintf(ans_str," %s\n", str_bb);
              } else {               } else {
                sprintf(ans_str," %s $%s$\n", str_bb,p->unit_str);                 sprintf(ans_str," %s $\\mathrm{%s}$\n", str_bb,p->unit_str);
              }               }
              capa_mfree((char *)str_bb);               capa_mfree((char *)str_bb);
            }             }
Line 2891  answers_string(mode, p)int mode;Problem_ Line 2904  answers_string(mode, p)int mode;Problem_
 }  }
   
   
   int check_for_unit_fail(int result)
   {
     int ret;
     ret = (result == UNIT_FAIL ||
    result == UNIT_IRRECONCIBLE ||
    result == UNIT_INVALID_STUDENT3 ||
    result == UNIT_INVALID_STUDENT2 ||
    result == UNIT_INVALID_STUDENT1);
     return ret;
   }
   
 /* ------------------------------ called from capalogin */  /* ------------------------------ called from capalogin */
 /*  impose stronger checking on the user input string *answer   */  /*  impose stronger checking on the user input string *answer   */
Line 2911  capa_check_ans(ai,ans, error) AnswerInfo Line 2934  capa_check_ans(ai,ans, error) AnswerInfo
   char    *us;    /* ans_unit_str */    char    *us;    /* ans_unit_str */
   Unit_t  *u_p;   /* ans_unit     */    Unit_t  *u_p;   /* ans_unit     */
   int      input_len, all_alphabet = 1, idx, ii, type;    int      input_len, all_alphabet = 1, idx, ii, type;
   int      outcome, result = INCORRECT;    int      outcome=-1, result = INCORRECT;
   int      sig, corr_len;    int      sig, corr_len;
   int      choice[ANSWER_STRING_LENG];    int      choice[MAX_ASCII];
   char     num_str[ANSWER_STRING_LENG], unit_str[ANSWER_STRING_LENG];    char     num_str[ANSWER_STRING_LENG], unit_str[ANSWER_STRING_LENG];
   char     fmted[ANSWER_STRING_LENG], correct[ANSWER_STRING_LENG], answer[ANSWER_STRING_LENG];    char     fmted[ANSWER_STRING_LENG], correctans[MAX_ASCII], answer[ANSWER_STRING_LENG];
   double   n_part;    double   n_part;
   double   given, target, ratio, fmted_target, target_u, target_l, scale=1.0;    double   given, target, ratio, fmted_target, target_u, target_l, scale=1.0;
   double   delta;    double   delta;
Line 2937  capa_check_ans(ai,ans, error) AnswerInfo Line 2960  capa_check_ans(ai,ans, error) AnswerInfo
                 all_alphabet = 0;                  all_alphabet = 0;
               }                }
             }              }
             if( !all_alphabet ) { /* answer string is not all alphabets */              if( !all_alphabet ) {
               outcome = split_num_unit(ans,&n_part,num_str,unit_str);                outcome = split_num_unit(ans,&n_part,num_str,unit_str);
       }
       if( outcome > 0 ) {
               if( outcome > 1 ) { /* with both num and unit parts or only unit part */                if( outcome > 1 ) { /* with both num and unit parts or only unit part */
                 if( u_p != NULL ) {                  if( u_p != NULL ) {
   if (UNIT_FAIL == (result = check_correct_unit(unit_str,u_p,&scale))) {    result = check_correct_unit(unit_str,u_p,&scale);
     if (check_for_unit_fail(result)) {
     *error=strsave(unit_str);      *error=strsave(unit_str);
   }    }
                 } else { /* what to do when no unit is specified but student entered a unit? */                  } else { /* what to do when no unit is specified but student entered a unit? */
Line 2953  capa_check_ans(ai,ans, error) AnswerInfo Line 2979  capa_check_ans(ai,ans, error) AnswerInfo
                   result = NO_UNIT;                    result = NO_UNIT;
                 }                  }
               }                }
               if( (result != NO_UNIT) && (result != UNIT_FAIL) && ( result != UNIT_NOTNEEDED) ) {                if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) {
                 if( t == ANSWER_IS_FLOAT ) {                  if( t == ANSWER_IS_FLOAT ) {
                   target = (double)atof(s); /* real number */                    target = (double)atof(s); /* real number */
                 } else {                  } else {
Line 3014  capa_check_ans(ai,ans, error) AnswerInfo Line 3040  capa_check_ans(ai,ans, error) AnswerInfo
           {            {
             corr_len = strlen(s); input_len = strlen(ans);              corr_len = strlen(s); input_len = strlen(ans);
             if( corr_len == input_len ) {              if( corr_len == input_len ) {
               for(idx=0;idx<ANSWER_STRING_LENG;idx++) choice[idx] = 0;                for(idx=0;idx<MAX_ASCII;idx++) {
    choice[idx] = 0;correctans[idx] = 0;
         }
               result = EXACT_ANS;                result = EXACT_ANS;
               for(ii=0;ii<corr_len; ii++) {                for(ii=0;ii<corr_len; ii++) {
                 idx = toupper(correct[ii]) - 'A'; choice[idx] =  1;                  idx = toupper(s[ii]); choice[idx] =  1;
               }                }
               for(ii=0;ii<input_len;ii++) {                for(ii=0;ii<input_len;ii++) {
                 idx = toupper(answer[ii]) - 'A';                  idx = toupper(ans[ii]); correctans[idx] = 1;
                 if(choice[idx] != 1 )  result = INCORRECT;        }
         for(ii=0;ii<MAX_ASCII;ii++) {
    if(choice[ii] != correctans[ii] )  result = INCORRECT;
               }                }
             } else { result = INCORRECT; }              } else { result = INCORRECT; }
             break;              break;
Line 3071  capa_check_answer(p, answer, error) Prob Line 3101  capa_check_answer(p, answer, error) Prob
   int     sig_l;     int     sig_l; 
   int     sig_u;    int     sig_u;
   char   *fmt;    char   *fmt;
   int     choice[ANSWER_STRING_LENG], ii, idx, corr_len, input_len;    int     choice[MAX_ASCII], correctans[MAX_ASCII];
   int     result = INCORRECT, sig, outcome, all_alphabet;    int     ii, idx, corr_len, input_len;
     int     result = INCORRECT, sig, outcome=-1, all_alphabet;
   char    fmted[FORMAT_STRING_LENG];    char    fmted[FORMAT_STRING_LENG];
   double  given, target, ratio, fmted_target, target_u, target_l, scale=1.0;    double  given, target, ratio, fmted_target, target_u, target_l, scale=1.0;
   double  delta;    double  delta;
Line 3086  capa_check_answer(p, answer, error) Prob Line 3117  capa_check_answer(p, answer, error) Prob
   fmt      = p->ans_fmt;    fmt      = p->ans_fmt;
   calc_type = p->calc;    calc_type = p->calc;
   unit_str[0]=0;    unit_str[0]=0;
     
   switch(type) {    switch(type) {
     case ANSWER_IS_INTEGER:      case ANSWER_IS_INTEGER:
     case ANSWER_IS_FLOAT:      case ANSWER_IS_FLOAT:
Line 3100  capa_check_answer(p, answer, error) Prob Line 3131  capa_check_answer(p, answer, error) Prob
             }              }
             if( !all_alphabet ) {              if( !all_alphabet ) {
               outcome = split_num_unit(answer,&n_part,input,unit_str);                outcome = split_num_unit(answer,&n_part,input,unit_str);
       }
       if( outcome > 0 ) {
               if( outcome > 1 ) { /* with both num and unit parts or only unit part */                if( outcome > 1 ) { /* with both num and unit parts or only unit part */
                 if( p->ans_unit != NULL ) {                  if( p->ans_unit != NULL ) {
   if ( UNIT_FAIL == ( result = check_correct_unit(unit_str,p->ans_unit,&scale) ) ) {    result = check_correct_unit(unit_str,p->ans_unit,&scale);
     if (check_for_unit_fail(result)) {
     *error=strsave(unit_str);      *error=strsave(unit_str);
   }    }
                 } else { /* what to do when no unit is specified but student entered a unit? */                  } else { /* what to do when no unit is specified but student entered a unit? */
Line 3114  capa_check_answer(p, answer, error) Prob Line 3148  capa_check_answer(p, answer, error) Prob
                   result = NO_UNIT;                    result = NO_UNIT;
                 }                  }
               }                }
               if( (result != NO_UNIT) && (result != UNIT_FAIL) && ( result != UNIT_NOTNEEDED) ) {                if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) {
                 if( type == ANSWER_IS_FLOAT ) {                  if( type == ANSWER_IS_FLOAT ) {
                   target = (double)atof(correct); /* real number */                    target = (double)atof(correct); /* real number */
                 } else {                  } else {
Line 3175  capa_check_answer(p, answer, error) Prob Line 3209  capa_check_answer(p, answer, error) Prob
           {            {
             corr_len = strlen(correct); input_len = strlen(answer);              corr_len = strlen(correct); input_len = strlen(answer);
             if( corr_len == input_len ) {              if( corr_len == input_len ) {
               for(ii=0;ii<ANSWER_STRING_LENG;ii++) choice[ii] = 0;  result = EXACT_ANS;                for(idx=0;idx<MAX_ASCII;idx++) {
    choice[idx] = 0;correctans[idx] = 0;
         }
                 result = EXACT_ANS;
               for(ii=0;ii<corr_len; ii++) {                for(ii=0;ii<corr_len; ii++) {
                 idx = toupper(correct[ii]) - 'A'; choice[idx] =  1;                  idx = toupper(correct[ii]); choice[idx] =  1;
               }                }
               for(ii=0;ii<input_len;ii++) {                for(ii=0;ii<input_len;ii++) {
                 idx = toupper(answer[ii]) - 'A';                  idx = toupper(answer[ii]); correctans[idx] = 1;
                 if(choice[idx] != 1 )  result = INCORRECT;        }
         for(ii=0;ii<MAX_ASCII;ii++) {
    if(choice[ii] != correctans[ii] ) result = INCORRECT;
               }                }
             } else { result = INCORRECT; }              } else { result = INCORRECT; }
             break;              break;
Line 3200  capa_check_answer(p, answer, error) Prob Line 3239  capa_check_answer(p, answer, error) Prob
          /* and the result will be given back as 0 or 1 to indicate the */           /* and the result will be given back as 0 or 1 to indicate the */
          /* given answer is correct or not */           /* given answer is correct or not */
          /* arguments are given to the program as */           /* arguments are given to the program as */
            /* before running the program, check its existance first */
            /* should we specify a time out period in capa.config file? */
            /* set up a timer for this purpose */
            /* FILE *popen (const char *command,const char *type ); */
   
           break;            break;
           
Line 3207  capa_check_answer(p, answer, error) Prob Line 3250  capa_check_answer(p, answer, error) Prob
   return (result);    return (result);
 }  }
   
 /* ----------------------------------------------------------------------------------- */  int check_tol (formula_val,tol_type,tol)
   double formula_val;int tol_type;double tol;
   {
     double diff;
     int outcome=APPROX_ANS;
     if( tol_type == TOL_ABSOLUTE ) {
       diff = tol - formula_val;
       if( diff < 0.0 )  {
         outcome = INCORRECT;
       }
     } else {
       diff = fabs(1.0 - formula_val) * 100.0 ;
       if( diff > tol ) {
         outcome = INCORRECT;
       }
     }
     return outcome;
   }
   
   /* -------------------------------------------------------------------------- */
 /*   assumming the formula is *fml_str and the student input is *input_str             */  /*   assumming the formula is *fml_str and the student input is *input_str             */
 /*   according to the type of tolerance, we form the final formula as                  */  /*   according to the type of tolerance, we form the final formula as                  */
 /*      absolute tolerance:  (*fml_str) - (*input_str)                                 */  /*      absolute tolerance:  (*fml_str) - (*input_str)                                 */
Line 3219  char *fml_str;char *input_str;char *var_ Line 3281  char *fml_str;char *input_str;char *var_
   char         *check_fml_str;    char         *check_fml_str;
   int           f_len, i_len, outcome, error_code;    int           f_len, i_len, outcome, error_code;
   PointsList_t *pt, *next;    PointsList_t *pt, *next;
   double        formula_val, diff;    double        formula_val;
       
   f_len = strlen(fml_str);    f_len = strlen(fml_str);
   i_len = strlen(input_str);    i_len = strlen(input_str);
Line 3231  char *fml_str;char *input_str;char *var_ Line 3293  char *fml_str;char *input_str;char *var_
     sprintf(check_fml_str,"(%s) / (%s)",input_str,fml_str);      sprintf(check_fml_str,"(%s) / (%s)",input_str,fml_str);
   }    }
   outcome = APPROX_ANS;    outcome = APPROX_ANS;
     if( pts_list==NULL ) {
       error_code = f_eval_formula(&formula_val,check_fml_str, var_list, NULL);
       if( ! error_code ) {
         outcome = check_tol(formula_val,tol_type,tol);
       } else {
         outcome = BAD_FORMULA;
       }      
     }
   
   for(pt= pts_list; pt!=NULL ; pt=next) {    for(pt= pts_list; pt!=NULL ; pt=next) {
     next=pt->pts_next;      next=pt->pts_next;
     error_code = f_eval_formula(&formula_val,check_fml_str, var_list, pt->pts_str);      error_code = f_eval_formula(&formula_val,check_fml_str, var_list, pt->pts_str);
     if( ! error_code ) {      if( ! error_code ) {
       if( tol_type == TOL_ABSOLUTE ) {        outcome = check_tol(formula_val,tol_type,tol);
         diff = tol - formula_val;  
         if( diff < 0.0 )  {  
           outcome = INCORRECT;  
         }  
       } else {  
         diff = abs(1.0 - formula_val) * 100.0 ;  
         if( diff < tol ) {  
           outcome = INCORRECT;  
         }  
       }  
     } else {      } else {
       outcome = BAD_FORMULA;        outcome = BAD_FORMULA;
       break;        break;
Line 3367  Problem_t *p; char **answers; int cnt; c Line 3428  Problem_t *p; char **answers; int cnt; c
     outcomes = (int *)capa_malloc(sizeof(int),cnt);      outcomes = (int *)capa_malloc(sizeof(int),cnt);
     for(ii=0;ii<cnt;ii++) outcomes[ii]=0;  /* initialize the outcomes array */      for(ii=0;ii<cnt;ii++) outcomes[ii]=0;  /* initialize the outcomes array */
     outcomes[0] = capa_check_answer(p, answers[0], &errormsg[0]);      outcomes[0] = capa_check_answer(p, answers[0], &errormsg[0]);
   #ifdef    COMMON_DBUG
       printf("CAPA_CHECK_ANSWER(%s,%s):: outcome[0]=%d\n", 
          p->answer,answers[0],outcomes[0]); 
   #endif
     for(ii=1, ai = p->ans_list; ai; ii++,ai = ai->ans_next  ) {      for(ii=1, ai = p->ans_list; ai; ii++,ai = ai->ans_next  ) {
        outcomes[ii] =  capa_check_ans(ai,answers[ii],&(errormsg[ii]));         outcomes[ii] =  capa_check_ans(ai,answers[ii],&(errormsg[ii]));
   #ifdef    COMMON_DBUG
       printf("CAPA_CHECK_ANS(%s,%s): outcome[%d]=%d\n", ai->ans_str,answers[ii],ii,outcomes[ii]); 
   #endif
     }      }
     done = ii = 0;      done = ii = 0;
     result = 0;      result = 0;
     while( !done ) { /* check if any of the outcome has failed on units */      while( !done ) { /* check if any of the outcome has failed on units */
       if( (outcomes[ii] == UNIT_FAIL) ||        if( (check_for_unit_fail(outcomes[ii])) ||
           (outcomes[ii] == NO_UNIT)   ||            (outcomes[ii] == NO_UNIT)   ||
           (outcomes[ii] == UNIT_NOTNEEDED) ) {            (outcomes[ii] == UNIT_NOTNEEDED) ) {
          result = outcomes[ii];           result = outcomes[ii];
Line 3383  Problem_t *p; char **answers; int cnt; c Line 3451  Problem_t *p; char **answers; int cnt; c
       ii++;        ii++;
       if(ii==cnt) done = 1;        if(ii==cnt) done = 1;
     }      }
     if( result == 0 ) { /* check if any of the outcome has failed to be a numeric */      if( result == 0 ) { 
       /* check if any of the outcome has failed to be a numeric 
          or was a malformed equation */
       done = ii = 0;        done = ii = 0;
       while( !done ) {        while( !done ) {
         if( outcomes[ii] == WANTED_NUMERIC ) {          if( outcomes[ii] == WANTED_NUMERIC || outcomes[ii] == BAD_FORMULA ) {
           result = outcomes[ii];            result = outcomes[ii];
           done = 1;            done = 1;
         }          }
Line 3394  Problem_t *p; char **answers; int cnt; c Line 3464  Problem_t *p; char **answers; int cnt; c
         if(ii==cnt) done = 1;          if(ii==cnt) done = 1;
       }        }
     }      }
     if( result == 0 ) { /* check if any of the outcome has failed on sig figs */      if( result == 0 ) {/*check if any of the outcome has failed on sig figs*/
       done = ii = 0;        done = ii = 0;
       while( !done ) {        while( !done ) {
         if( outcomes[ii] == SIG_FAIL ) {          if( outcomes[ii] == SIG_FAIL ) {
Line 3418  Problem_t *p; char **answers; int cnt; c Line 3488  Problem_t *p; char **answers; int cnt; c
       }        }
     }      }
     for (ii=0;ii<cnt;ii++) {      for (ii=0;ii<cnt;ii++) {
       if( (outcomes[ii] == UNIT_FAIL) ||        if( (check_for_unit_fail(outcomes[ii])) ||
           (outcomes[ii] == SIG_FAIL)   ||            (outcomes[ii] == SIG_FAIL)   ||
           (outcomes[ii] == UNIT_NOTNEEDED) ) {            (outcomes[ii] == UNIT_NOTNEEDED) ) {
  capa_mfree(errormsg[ii]);   capa_mfree(errormsg[ii]);
Line 3436  Problem_t *p; char **answers; int cnt; c Line 3506  Problem_t *p; char **answers; int cnt; c
      result = capa_check_answer(p, answers[0], error);       result = capa_check_answer(p, answers[0], error);
      ii = 1;  ai = p->ans_list;       ii = 1;  ai = p->ans_list;
      while( (ii<p->ans_cnt) && ( (result != EXACT_ANS) && (result != APPROX_ANS) ) ) {       while( (ii<p->ans_cnt) && ( (result != EXACT_ANS) && (result != APPROX_ANS) ) ) {
        if((ii!=1)&&((result==UNIT_FAIL)||(result==SIG_FAIL)||(result==UNIT_NOTNEEDED))) {         if((ii!=1)&&((check_for_unit_fail(result))||(result==SIG_FAIL)||(result==UNIT_NOTNEEDED))) {
  capa_mfree((char*)error);   capa_mfree((char*)error);
        }         }
        result =  capa_check_ans(ai,answers[0],error);         result =  capa_check_ans(ai,answers[0],error);
Line 3537  char *key_word;char *value; Line 3607  char *key_word;char *value;
   }    }
  }   }
  if (c=='\n') found=1;   if (c=='\n') found=1;
  if (((char)c)==((char)EOF)) break;   if (((char)c)==((char)EOF)) {failed=1;break;}
       }        }
     }      }
   } while (!done && !failed);     } while (!done && !failed); 
Removed from v.1.13  
changed lines
  Added in v.1.28

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