#include <stdio.h>

#include<string.h>


void a() {}

void b() {}

void c() {}

void d() {}


int main() {

char choice;

while (1) {

scanf("%c", &choice);

printf("입력하신 메뉴 : %c\n", choice);

if (choice == '1'){

a();

}

if (choice == '2') 

b();

if (choice == '3')

c();

if (choice == '4')

d();

if (choice == 'q')

break;

}

}