program to read marks of three subjects and show the division

 

Use the following information for division

Percentage	Grade
80-100	First
70-80	Second
50-70	Third
0-50	Fail

C Program

#include <stdio.h>
#include <stdlib.h>
int main()
{
    float sub1,sub2,sub3,avg;
    printf("Enter your marks in subject-1:");
    scanf("%f",&sub1);
    printf("Enter your marks in subject-2:");
    scanf("%f",&sub2);
    printf("Enter your marks in subject-3:");
    scanf("%f",&sub3);
    avg=(sub1+sub2+sub3)/3;
    if(avg<=100 && avg>=80)
        printf("First division");
    else if(avg<80 && avg>=70)
        printf("Second division");
    else if(avg<70 && avg>=50)
        printf("Third division");
    else if(avg<50 && avg>0)
        printf("fail");
    else
        printf("Please enter marks correctly");
}