C :

#include <stdio.h>

int main(void) {
	int n;
	scanf("%d", &n);
	if(n % 2 == 1)
		printf("yes\n");
	else
		printf("no\n");
	return 0;
}

C++ :

#include<cstdio>
using namespace std;
int main()
{
	int n;
	scanf("%d",&n);
	if(n%2==1)
	{
		printf("yes\n");
	}
	else
	{
		printf("no\n");
	}
	return 0;
}

Pascal :

program y1;
 var
  a:integer;
 begin
  readln(a);
  if a mod 2=0 then writeln('no')
                     else writeln('yes');
 end.