判断日期合法性

 

#include   <iostream.h> 
#include   <stdio.h> 


int   Days[12]={31,   28,   31,   30,   31,   30,   31,   31,   30,   31,   30,   31}; 

bool   CheckDate(int   iYear,   int   iMonth,   int   iDay); 

int   main(void)   
{   
int   iYear,   iMonth,   iDay; 

cout < < "Year: "; 
cin> > iYear; 
cout < < "Month: "; 
cin> > iMonth; 
cout < < "Day: "; 
cin> > iDay; 


cout < <CheckDate(iYear,   iMonth,   iDay); 
cout < <endl; 

return   0; 
} 


bool   CheckDate(int   iYear,   int   iMonth,   int   iDay) 
{ 
if(iMonth <1   ||   iMonth> 12)   return   false; 

bool   b_IsLeapYear=false; 
if(iYear%4==0)   
{ 
b_IsLeapYear=true; 

if(!(iYear%100==0   &&   iYear%400==0))   b_IsLeapYear=false; 
} 

if(b_IsLeapYear)   Days[1]=29; 
else   Days[1]=28; 

if(iDay <0   ||   iDay> Days[iMonth-1])   return   false; 

return   true; 
}