#include <stdio.h>
int main() {
int a = 5;
printf("a++ = %d\n", a++); // prints 5, then a becomes 6
printf("++a = %d\n", ++a); // a becomes 7, then prints 7
printf("a-- = %d\n", a--);
printf("--a = %d\n", --a);
return 0;
}