#include <stdio.h>
#include <ctype.h>

#define LEN 100

int fgetAnswers(FILE *exam);

int print_sol(int qcount,  char answers []);

int grade(FILE *exam, int qcount, char answers[]);

int main()
{
  int loop_check = 0;
  int questions_count;
  FILE *exam;
  FILE *report;

  if((exam = fopen("examdat.txt", "r")) != NULL)
  {
    questions_count = fgetAnswers(exam);
  }

  else printf("Wrong file name\n");

  return(0);
}

int fgetAnswers(FILE *exam)
{
  int qcount;
  int question_quant1 = 0;
  int question_quant2 = 0;
  int count = 0;
  int id;
  int i;
  char answers[LEN];

  fscanf(exam, "%d", &qcount);
  fscanf(exam, "%s", answers);
  print_sol(qcount, answers);
  grade(exam, qcount, answers);
  return(qcount);
}

int print_sol(int qcount,  char answers [])
{
  int i;
  printf("Question   ");

  for (i = 1; i <= qcount; ++i)
  {
    printf("%d  ", i);
  }
  printf("\nAnswer     ");

  for (i = 1; i <= qcount; i++)
  {
    printf ("%c  ", answers[i - 1]);
  }
  printf ("\n");
  return (0);
}

int grade(FILE *exam, int qcount, char answers [])
{
  int ident;
  int k;
  int i;
  char stud_ans[qcount];
  int num_right = 0;
  int num_wrong = 0;
  int accuracy;
  int total_miss[qcount];


  for(i = 0; i < qcount; i++)
    total_miss[i] = 0;

  while(!feof(exam))
  {
     fscanf(exam, "%d", &ident);
     fscanf(exam, "%s\n", &stud_ans);
     num_right = 0;
     num_wrong = 0;

     for(k = 0; k < qcount; k++)
     {
      if (stud_ans[k] == answers[k])
        num_right++;
      else
      {
        num_wrong++;
        total_miss[k]++;
      }
    }

    printf("%d  ", ident);

    accuracy = (num_right * 100) / qcount;
    printf("%d\n", accuracy);

   }

    printf("Question   ");
    for (i = 1; i <= qcount; ++i)
    {
      printf("%d  ", i);
    }

    printf("\nMissed by    ");
    for (i = 0; i < qcount; ++i)
    {
      printf("%d  ", total_miss[i]);
    }

   return (0);
}