#include <iostream>
using namespace std;
int main()
{
	int x, y, a, b;
	x = a =10;
	y = ++x; // prefix increment
	cout <<"\n prefix "<< x << " : "  << y;
	b= a++; 
	cout <<"\n postfix "<<  a << " : " << b ; 
	char ch1 , ch2;
	ch1 = 'a'; 
	ch2 = ++ch1; 
	cout <<"\n prefix "<< ch2; 
	ch1 = 'a'; 
	ch2 = ch1++; 
	cout <<"\n postfix "<< ch2; 
	return 0;
}