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  1. #include <stdio.h>
  2.  
  3. struct gradeStats {
  4.     int total_A;
  5.     int total_B;
  6.     int total_C;
  7.     int total_D;
  8.     int total_F;
  9.     int total_I;
  10. };
  11.  
  12. struct gradeStats countGrades(char grades[], int size) {
  13.     struct gradeStats stats = {0};
  14.  
  15.     for (int i = 0; i < size; i++) {
  16.         char grade = grades[i];
  17.         switch (grade) {
  18.             case 'A':
  19.             case 'a':
  20.                 stats.total_A++;
  21.                 break;
  22.             case 'B':
  23.             case 'b':
  24.                 stats.total_B++;
  25.                 break;
  26.             case 'C':
  27.             case 'c':
  28.                 stats.total_C++;
  29.                 break;
  30.             case 'D':
  31.             case 'd':
  32.                 stats.total_D++;
  33.                 break;
  34.             case 'F':
  35.             case 'f':
  36.                 stats.total_F++;
  37.                 break;
  38.             default:
  39.                 stats.total_I++; // Invalid grade
  40.         }
  41.     }
  42.  
  43.     return stats;
  44. }
  45.  
  46. int main() {
  47.     char grades[] = {'A', 'b', 'C', 'x', 'D', 'c', 'F', 'B', 'Y', 'B', 'B', 'A'};
  48.     int size = sizeof(grades) / sizeof(grades[0]);
  49.  
  50.     struct gradeStats stats = countGrades(grades, size);
  51.  
  52.     printf("Total A: %d\n", stats.total_A);
  53.     printf("Total B: %d\n", stats.total_B);
  54.     printf("Total C: %d\n", stats.total_C);
  55.     printf("Total D: %d\n", stats.total_D);
  56.     printf("Total F: %d\n", stats.total_F);
  57.     printf("Total I: %d\n", stats.total_I);
  58.  
  59.     return 0;
  60. }
  61.  
Success #stdin #stdout 0s 5300KB
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stdin
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Standard input is empty
stdout
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Total A: 2
Total B: 4
Total C: 2
Total D: 1
Total F: 1
Total I: 2
https://ideone.com/p8ZGP6
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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