Program that determines whether the given integer is a square number

# include <iostream.h>
# include<conio.h>
int isSquare (int);
int main( )
{
 const int MAX = 20;
 for ( int i =0; i < MAX; i++)
       if (isSquare(i) )
        cout<<i<<" is square. \n";
      else
         cout<<i<<"is not square. \n";
 getch( );
return 0;
}
         int isSquare( int n)
         {
            int i =0;
            while ( i*i < n)
            ++i;
            if ( i* i == n) return 1;
            else return 0 ;
          }