C program to enter Student marks and find Percentage and Grade

#include<stdio.h>
int main()
{
	int maths, science, history, hindi, computer;
	float per;

	printf("Enter 5 subject marks: ");
	scanf("%d%d%d%d%d",&maths,&science,&history,&hindi,&computer);

	/* Calculate percentage */
	per = (maths + science + history + hindi + computer)/5;
	printf("Percentage = %.2f\n",per);

	/* Find grade according to the percentage */
	if(per >= 90)
	{
		printf("Grade A");
	}
	else if(per >= 80)
	{
		printf("Grade B");
	}
	else if(per >= 70)
	{
		printf("Grade C");
	}
	else if(per >= 60)
	{
		printf("Grade D");
	}
	else if(per >= 40)
	{
		printf("Grade E");
	}
	else
	{
		printf("Grade F");
	}

	return 0;
}

Output

Enter 5 subject marks: 96
95
98
92
88
Percentage = 93.00
Grade A