Leap year calculating day of month

#include<iostream.h>
#include<conio.h>
void main()
{
 int n,i;
 clrscr();
 cout<<"Enter a Day number of Leap year : ";
 cin>>n;
 if(n>=1 && n<=31)
 {
  cout<<"\nJanuary";
  cout<<"\nDay of month :"<<n;
 }
 else if(n>31 && n<=60)
 {
  cout<<"\nFeburary";
  cout<<"\nDay of month :"<<n-31;
 }
 else if(n>60 && n<=91)
 {
  cout<<"\nMarch";
  cout<<"\nDay of month :"<<n-60;
 }
 else if(n>91 && n<=121)
 {
  cout<<"\nApril";
  cout<<"\nDay of month :"<<n-91;
 }
 else if(n>121&&n<=152)
 {
  cout<<"\nMay";
  cout<<"\nDay of month :"<<n-120;
 }
 else if(n>152&&n<=182)
 {
  cout<<"\nJune";
  cout<<"\nDay of month :"<<n-152;
 }
 else if(n>182&&n<=213)
 {
  cout<<"\nJuly";
  cout<<"\nDay of month :"<<n-182;
 }
 else if(n>213&&n<=244)
 {
  cout<<"\nAugust";
  cout<<"\nDay of month :"<<n-213;
 }
 else if(n>244&&n<=274)
 {
  cout<<"\nSeptember";
  cout<<"\nDay of month :"<<n-244;
 }
 else if(n>274&&n<=305)
 {
  cout<<"\nOctober";
  cout<<"\nDay of month :"<<n-274;
 }
 else if(n>305&&n<=335)
 {
  cout<<"\nNovember";
  cout<<"\nDay of month :"<<n-305;
 }
 else if(n>335&&n<=366)
 {
  cout<<"\nDecember";
  cout<<"\nDay of month :"<<n-335;
 }
 else
 {
  cout<<"\nEnter Day number of Leap year..";
 }
 getch();
}