Consider the program:

#include<stdio.h>
int main()
{
	int science; 
	int math;
	int english;
	
	int total;
	float per;

	science = 50;
	math = 90;
	english = 40;
	//you can take input from user instead of these values

	//calculating total
	total= science + math + english;
	
	//calculating percentage
	per= (float) total*100/300;

	printf("Total Marks: %d\n",total);
	printf("Percentage is: %.2f\n",per);

	//checking division and printing
	if(per>=60)
	{
		printf("First division\n");
	}
	else if(per>=50)
	{
		printf("Second division");
	}
	else if(per>=40)
	{
		printf("Third division");
	}
	else
	{
		printf("Fail\n");
	}
	
	return 0;
}

Output

Total Marks: 180
Percentage is: 60.00
First division

This is a simple C program, if you are a beginner you will learn to calculate total, percentage and how to find division (example of multiple if else).

If liked or any issue with the program, feel free to leave your comment.