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/* Grading system */
#include <stdio.h>
int main(void)
{
int n1, n2, n3, n4;
float avg;
printf("Grading system\n\n");
printf("Enter marks obtained in four subjects: ");
scanf("%d%d%d%d", &n1, &n2, &n3, &n4);
avg = (float)(n1 + n2 + n3 + n4)/4;
printf("The average of the marks is %f\n", avg);
if (avg >= 80)
printf("The student has grade A.\n");
if (avg >= 60 && avg < 80)
printf("The student has grade B.\n");
if (avg >= 40 && avg < 60)
printf("The student has grade C.\n");
if (avg < 40)
printf("The student has failed.\n");
return 0;
}
/*
Output:
Set 1:
Grading system
Enter marks obtained in four subjects: 81
85
86
91
The average of the marks is 85.750000
The student has grade A.
Set 2:
Grading system
Enter marks obtained in four subjects: 86 75 71 42
The average of the marks is 68.500000
The student has grade B.
Set 3:
Grading system
Enter marks obtained in four subjects: 45
55
51
42
The average of the marks is 48.250000
The student has grade C.
Set 4:
Grading system
Enter marks obtained in four subjects: 25
31
40 32
The average of the marks is 32.000000
The student has failed.
*/
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