HansJack

#include <stdio.h>
#include <stdint.h>
#include <inttypes.h>

#define STUDENT_COUNT 5
int main(void)
{
	
	
	uint32_t grades[STUDENT_COUNT] = { 85, 92, 88, 96, 66 };

	uint32_t sum = 0;

	uint32_t max_grade = grades[0];

	uint32_t min_grade = grades[0];

	puts("全員の成績表は以下の通りです：");

	for (uint32_t index = 0; index < STUDENT_COUNT; index++) {
	
		printf("学生%" PRIu32 "の成績：%" PRIu32 "\n", index +1, grades[index]);
		
		sum += grades[index];

		if (grades[index] > max_grade) {
			max_grade = grades[index];

		}

		if (grades[index] < min_grade) {
			min_grade = grades[index];

		}
		

	}

	double average = (double)sum / STUDENT_COUNT;

	printf("\n平均成績：%.2f\n", average);
	printf("最高成績：%d\n", max_grade);
	printf("最低成績：%d\n", min_grade);
	return 0;
}