Siam 1

#include <stdio.h>

struct stdInfo {
    int ID;
    char name[40];
    int courseNo;
    int credits[9];
    double grades[9];
    double cgpa;
};

int main() {
    int totalStudent;
    printf("Enter the number of students: ");
    scanf("%d", &totalStudent);
    struct stdInfo info[totalStudent];

    for (int i = 0; i < totalStudent; i++) {
        printf("\nStudent-%d information:\n", i + 1);
        printf("ID: ");
        scanf("%d", &info[i].ID);
        printf("Name: ");
        getchar();
        gets(info[i].name);
        printf("#course: ");
        scanf("%d", &info[i].courseNo);
        printf("Credits: ");
        for (int j = 0; j < info[i].courseNo; j++) {
            scanf("%d", &info[i].credits[j]);
        }
        printf("Grades: ");
        for (int j = 0; j < info[i].courseNo; j++) {
            scanf("%lf", &info[i].grades[j]);
        }
    }

    printf("\nSummary:\n");
    printf("ID\tName\tCGPA\n");
    for (int i = 0; i < totalStudent; i++) {
        printf("%d\t%s\t", info[i].ID, info[i].name);
        double ans = 0, total = 0;

        for (int j = 0; j < info[i].courseNo; j++) {
            ans += (info[i].credits[j] * info[i].grades[j]);
            total += info[i].credits[j];
        }
        ans /= total;
        printf("%.4lf\n", ans);
    }
}