#include <stdio.h>

// Unary ops

int main() {

	int a = 5, b = -7;

	printf("To begin with, a = %d, b = %d\n", a, b);

	a = +a;
	b = +b;

	printf("After unary +, a = %d, b = %d\n", a, b);

	a = -a;
	b = -b;

	printf("After unary -, a = %d, b = %d\n", a, b);
}