How to make odd and even program in c++

#include<conio.h>
#include<iostream.h>

void main()
{
 clrscr();
 int a;
 cout<<"Enter the no. to check it is odd/even.\n";
 cin>>a;

    if(a%2==0)
     cout<<a<<"is even";

    else
     cout<<a<<"is odd";

 getch();

}



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