#include <stdio.h>
#include <string.h>
 
#define NUM_STUDENTS 5
#define NUM_SUBJECTS 3
 
struct Student {
    char name[50];
    char subjects[NUM_SUBJECTS][50];
    float grades[NUM_SUBJECTS];
};
 
int main() {
    struct Student students[NUM_STUDENTS];
    int i, j;
    float sum, average;
 
    // รับข้อมูลนักศึกษา
    for (i = 0; i < NUM_STUDENTS; i++) {
        printf("นักศึกษาคนที่ %d\n", i + 1);
        printf("ชื่อ: ");
        scanf("%s", students[i].name);
        for (j = 0; j < NUM_SUBJECTS; j++) {
            printf("วิชาที่ %d: ", j + 1);
            scanf("%s", students[i].subjects[j]);
            printf("เกรด: ");
            scanf("%f", &students[i].grades[j]);
        }
    }
 
    // แสดงผลข้อมูลนักศึกษา
    printf("\nข้อมูลนักศึกษา\n");
    for (i = 0; i < NUM_STUDENTS; i++) {
        printf("ชื่อ: %s\n", students[i].name);
        sum = 0;
        for (j = 0; j < NUM_SUBJECTS; j++) {
            printf("  %s: %.2f\n", students[i].subjects[j], students[i].grades[j]);
            sum += students[i].grades[j];
        }
        average = sum / NUM_SUBJECTS;
        printf("  เกรดเฉลี่ย: %.2f\n", average);
    }
 
    return 0;
}
 

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