How to count the total ABCDE in C - c

Question

I'm trying to make a C program that could read the students' scores until the user enter end of file (EOF) and determine whether their grade is A, B, C, D, or E. I'm having troubles in counting the total of A's, B's, C's, D's, and E's. The total is always 0 (zero).
This is what I've tried
#include<stdio.h>
int main()
{
int num_stu, score, counter, total,grade;
int aCount = 0, bCount=0, cCount=0,
dCount=0, eCount=0;
total = 0;
counter = 1;
printf("Enter how many number of students: ");
scanf("%d",&num_stu);
while (counter <=num_stu){
printf("Enter student score: ");
scanf("%d",&score);
if(score>=80)
printf("Student's grade is A\n");
else
if(score>=70)
printf("Student's grade is B\n");
else
if(score>=60)
printf("Student's grade is C\n");
else
if(score>=50)
printf("Student's grade is D\n");
else
printf("Student's grade is E\n");
counter=counter+1;
}
while ((grade=getchar()) !=EOF) {
switch (grade){
case 'A':case'a':
++aCount;
break;
case'B': case'b':
++bCount;
break;
case'C': case'c':
+cCount;
break;
case'D':case'd':
++dCount;
break;
case'E':case'e':
++eCount;
break;
case'\n': case' ':
break;
default:
printf("Incorrect letter grade entered.");
printf("Enter a new grade.\n");
break;
}
}
printf("\n Totals for each letter grade are: \n");
printf("A: %d\n",aCount);
printf("B: %d\n",bCount);
printf("C: %d\n",cCount);
printf("D: %d\n",dCount);
printf("E: %d\n",eCount);
return 0; }
Is there anything that I did wrong? Thanks in advance!

Answer 1

You need to get rid of '\n' every time you press enter. So to get rid of these Put
one getchar() before the while loop and one get char inside the while loop.
#include<stdio.h>
int main()
{
int num_stu, score, counter, total,grade;
int aCount = 0, bCount=0, cCount=0,
dCount=0, eCount=0;
total = 0;
counter = 1;
printf("Enter how many number of students: ");
scanf("%d",&num_stu);
while (counter <=num_stu){
printf("Enter student score: ");
scanf("%d",&score);
if(score>=80)
printf("Student's grade is A\n");
else
if(score>=70)
printf("Student's grade is B\n");
else
if(score>=60)
printf("Student's grade is C\n");
else
if(score>=50)
printf("Student's grade is D\n");
else
printf("Student's grade is E\n");
counter=counter+1;
}
getchar();
while ((grade=getchar()) !=EOF) {
getchar();
switch (grade){
case 'A':case'a':
++aCount;
break;
case'B': case'b':
++bCount;
break;
case'C': case'c':
+cCount;
break;
case'D':case'd':
++dCount;
break;
case'E':case'e':
++eCount;
break;
case'\n': case' ':
break;
default:
printf("Incorrect letter grade entered.");
printf("Enter a new grade.\n");
break;
}
}
printf("\nTotals for each letter grade are: \n");
printf("A: %d\n",aCount);
printf("B: %d\n",bCount);
printf("C: %d\n",cCount);
printf("D: %d\n",dCount);
printf("E: %d\n",eCount);
return 0;
}