CGPA Calculator

#include <stdio.h>

int main()
{
    int n,i;
    printf("Enter number of courses in trimester: ");
    scanf("%d",&n);
    int credit_hour[n],total_credit=0;
    float credit_gpa[n],sum=0,total_gpa;

    for(i=0; i<n; i++)
    {
        printf("%d Subject CrH: ",i+1);
        scanf("%d",&credit_hour[i]);
        printf("%d SGPA: ",i+1);
        scanf("%f",&credit_gpa[i]);
    }
    printf("\n");
    for(i=0; i<n; i++)
    {
        total_credit += credit_hour[i];
    }
    for(i=0; i<n; i++)
    {
        sum = sum + (credit_hour[i]*credit_gpa[i]);
    }
    total_gpa = sum/total_credit;

    printf("\nYour CGPA: %.2f",total_gpa);
}