#include<stdio.h>

int main(int argc, char ** argv){
	int num;
	void print_num(){
		printf("num = %d\n", num);
		int num = 20;
		printf("num = %d\n", num);
	}
	if(argv[1][0] == 'a'){
		num = 47;
	} else {
		num = 72;
	}
	print_num();
}