#define _CRT_SECURE_NO_WARNINGS
 
#include <stdio.h>
 
struct student {
	char name[20];
	int kor;
	int eng;
	int mat;
	int tot;
	float avg;
};
 
int main() {
	struct student s[5];
	char name[20];
 
	for (int i = 0; i < 5; i++) {
		printf("이름 국 영 수를 입력하세요: ");
		scanf("%s %d %d %d", s[i].name, &s[i].kor, &s[i].eng, &s[i].mat);
		s[i].tot = s[i].kor + s[i].eng + s[i].mat;
		s[i].avg = s[i].tot / 3.0;
	}
	printf("이름\t국어\t영어\t수학\t합계\t평균\n");
	printf("============================================\n");
	for (int i = 0; i < 5; i++) {
		printf("%s\t%d\t%d\t%d\t%d\t%f\n", s[i].name, s[i].kor, s[i].eng, s[i].mat, s[i].tot, s[i].avg);
	}
}

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정지환 10 20 30
정지완 11 21 31
정지원 12 22 32
정지웬 13 23 33
정지웳 14 24 34