C++ Programming-Adding day

#include<iostream.h>

#include<conio.h>

void main()

{

int day,month,year;

clrscr();

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

cout<<"enter day,month,year"<<endl;

cin>>day>>month>>year;

if(year%4==0&&year%100!=0||year%400==0)

{

m[1]=m[1]+1;

day=day+1;

}

else

day=day+1;

if(day>m[month-1])

{

day=1;

month++;

}

if(month>12)

{

month=1;

year++;

}

cout<<"incrimented data is:"<<day<<"-"<<month<<"-"<<year;

getch();

}

enter day,month,year

31

12

2011

incrimented data is:1-1-2012