7.2-4.txt

介绍C程设计的一典型案例：例如编写一些小游戏

#include<stdio.h>
int main(void)
{
	int x,y,z,days,i,j,k;
	int m[2][13]={
		{0,31,28,31,30,31,30,31,31,30,31,30,31},
		{0,31,29,31,30,31,30,31,31,30,31,30,31}
	};
	for(k=1;k<=2;k++)
	{
		printf("Input year,month,day:");
		scanf("%d%d%d",&x,&y,&z);
		days=0;
		j=(x%4==0&&x%100!=0||x%400==0);
		for(i=0;i<y;i++)
			days=days+m[j][i];
		printf("Days of year:%d\n",days+z);
	}
	return 0;
}