cpp55.cpp

C语言考试资料 C语言考试资料

#include<stdio.h>
void main()
{
int day,month,year,sum,leap;
printf("\n please input year,month,day\n");
scanf(" %d,%d,%d",&year,&month,&day);
switch(month)/*先计算某月以前月份的总天数*/
{
	case 1: sum=0;break;
	case 2: sum=31;break;
	case 3: sum=59;break;
    case 4: sum=90;break;
	case 5: sum=120;break;
	case 6: sum=151;break;
	case 7: sum=181;break;
	case 8: sum=212;break;
	case 9: sum=243;break;
	case 10: sum=273;break;
	case 11: sum=304;break;
    case 12: sum=334;break;　
    default: printf("data error");
	break;	　
}
 sum = sum+day; /*再加上某天的天数*/
    if (year % 400 == 0 || (year % 4 == 0 && year % 100 !=0))/*判断是不是闰年*/
        leap=1;
	else
        leap=0;
	if(leap == 1 && month>2)/*如果是闰年且月份大于2,总天数应该加一天*/
    sum++;
    printf("It is the %dth day.",sum);}