simple or a composite number

#include <stdio.h>
#include <conio.h>
int Prime ( int N ); 
main()
{
int N;
printf ( "\nEnter integer: ");
scanf ( "%d", &N );
if ( Prime(N) ) 
printf ( "Integer is simple\n", N );
else printf ( "Integer is composite\n", N );
getch();
}
int Prime ( int N ) 
{
for ( int i = 2; i*i <= N; i ++ )
if ( N % i == 0 ) return 0; 
else return 1; 
}