#include <stdio.h>

#define PRINT_INT(a) printf(#a " = %d
",a)
#define CONCAT(a,b)  a##b

void main(void)
{
    int i=5, j=3;
    int ij=7;

    PRINT_INT(i);
    PRINT_INT(j);

    PRINT_INT(CONCAT(i,j));
}