C program to calculate average of marks and display grade.

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Question:

Write a C program to take marks of 5 subjects from user and calculate its percentage and display the grade.

Source code:

#include<stdio.h> int main() { int sub1,sub2,sub3,sub4,sub5; printf("Enter sub1 marks:"); scanf("%d",&sub1); printf("Enter sub2 marks:"); scanf("%d",&sub2); printf("Enter sub3 marks:"); scanf("%d",&sub3); printf("Enter sub4 marks:"); scanf("%d",&sub4); printf("Enter sub5 marks:"); scanf("%d",&sub5); float t_marks=(sub1+sub2+sub3 +sub4+sub5)/5; float perct=t_marks*100; if(perct > 75) { printf("Grade: A"); } else if(perct > 60 && perct <= 75) { printf("Grade: B"); } else if(perct >= 50 && perct < 60) { printf("Grade: C"); } else { printf("Fail"); } return 0; }

Output:

Enter sub1 marks:100 Enter sub2 marks:100 Enter sub3 marks:100 Enter sub4 marks:100 Enter sub5 marks:100 Grade: A

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