【c语言】简单学生信息管理系统

#include <stdio.h>

struct student
{
	char name[10];
	int score[4];
	int total;
	float average;
};
//定义全局变量
struct student stus[5];
float a = 0;

void input();
void output();
float average(int );
void maximum();

int main(void)
{
	input();
	output();

//	system("PAUSE");

	return 0;
}


void input()
{
	printf("please input\nNO.\tname\tscore1\tscore2\tscore3\tscore4\n");
	for(int i=0; i<5; i++)
	{
		printf("%d\t", 101+i);
		scanf("%s\t%d\t%d\t%d\t%d", &stus[i].name, &stus[i].score[0], &stus[i].score[1], &stus[i].score[2],
			&stus[i].score[3]);
		stus[i].total = stus[i].score[0] + stus[i].score[1] + stus[i].score[2] + stus[i].score[3];
		stus[i].average = average(i);
//		printf("%f", stus[i].average);
		a += stus[i].average;
	}
	a /= 5;
}
float average(int i)
{
	return ((float)stus[i].total/4);
}
void output()
{
	printf("\n\nNO.\tname\tscore1\tscore2\tscore3\tscore4\ttotal\taverage\n");
	for(int i=0; i<5; i++)
	{
		printf("%d\t%s\t%d\t%d\t%d\t%d\t%d\t%6.2f\n", 101+i, stus[i].name, stus[i].score[0], 
			stus[i].score[1], stus[i].score[2], stus[i].score[3], stus[i].total, stus[i].average);
	}
	printf("The highest score:\n");
	maximum();
	printf("\nThe total average is : %6.2f\n", a);
}
void maximum()
{
	int k=0;
	for(int i=1; i<5; i++)
	{
		if(stus[k].average < stus[i].average)
			k = i;
	}
	printf("%d\t%s\t%d\t%d\t%d\t%d\t%d\t%6.2f", 101+k, stus[k].name, stus[k].score[0], stus[k].score[1], stus[k].score[2], stus[k].score[3],
			stus[k].total, stus[k].average);
}