GPA converter.cpp

GPA converter.cpp

#include <bits/stdc++.h>

using namespace std;

double gpa(int cnt[])
{
    int sum = cnt[0] + 2 * cnt[1] + 3 * cnt[2] + 4 * cnt[3];
    // printf("%d %d %d %d\n", cnt[0], cnt[1], cnt[2], cnt[3]);
    int total = cnt[0] + cnt[1] + cnt[2] + cnt[3];
    // printf("%d %d\n", sum, total);
    return 1.0 * sum / total;
}

int main()
{
    int num, credit;

    int cnt[4] = {0};
    printf("Please enter in the following format grade credit\n"
           "e.g. 95 4 is 4 credit of grade 95\n");
    while(scanf("%d %d", &num, &credit) == 2) {
        if(num >= 90)
            cnt[3] += credit;
        else if(num >= 80)
            cnt[2] += credit;
        else if(num >= 70)
            cnt[1] += credit;
        else
            cnt[0] += credit;
    }

    printf("total credit = %d\n", cnt[0] + cnt[1] + cnt[2] + cnt[3]);
    printf("gpa = %.2f\n", gpa(cnt));
    
    return 0;
}