C语言程序设计万年历怎么编写

#include <stdio.h>

int IsLeapYear(int);

main()
{
int i;
int day;
int year;
int temp;
int temp_i;
long int Year_days = 0;
int Year_Start = 1;
int Per_Year_Days;
int month_day[]={31,28,31,30,31,30,31,31,30,31,30,31,29};

printf("Please enter the year: ");
scanf("%d",&year);

while(Year_Start < year)
{
if( IsLeapYear( Year_Start ) )
Per_Year_Days = 366;
else
Per_Year_Days = 365;

Year_days = Year_days + Per_Year_Days;
Year_Start++;
}

for( temp = 1; temp <=12; temp++ )
{
switch( temp )
{
case 1:
printf(" January(%d)\n",year);
break;
case 2:
printf(" February(%d)\n",year);
break;
case 3:
printf(" March(%d)\n",year);
break;
case 4:
printf(" April(%d)\