C Program to find sum and percentage of subjects

Program

#include<stdio.h>
void main()
{
	int m1, m2, m3, m4, m5, total_marks;
	int max_marks = 500;
	float percent;
	printf("Enter marks of 5 subjects\n");
	printf("Subject 1:\t");
	scanf("%d", &m1);
	printf("Subject 2:\t");
	scanf("%d", &m2);
	printf("Subject 3:\t");
	scanf("%d", &m3);
	printf("Subject 4:\t");
	scanf("%d", &m4);
	printf("Subject 5:\t");
	scanf("%d", &m5);
	total_marks = m1 + m2 + m3 + m4 + m5;
	printf("Total marks: %d\n", total_marks);
	percent = (total_marks * 100) / max_marks;
	printf("Percentage: %f\n", percent);
}

Output

Enter marks of 5 subjects
Subject 1:	72
Subject 2:	89
Subject 3:	93
Subject 4:	67
Subject 5:	79
Total marks: 400
Percentage: 80.000000