hanoi recusive 의 초절정 +_+ 하노이탑

[code]
// hanoi.h
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>

extern int cnt;
extern int x;

int get_data();
void move(int n, char a, char b, char c);


// hanoi.c
#include "hanoi.h"
int cnt = 0;
int x = 0;
int main()
{
    int n;
    n = get_data();
    assert(n>0);
    move(n,'A','B','C');    
    return 0;
}


// get_data.c
#include "hanoi.h"

int get_data()
{
    int n;
    char c;
    printf("insert number");
    
    if(scanf("%d",&n) != 1 || n<1)
    {
        printf("nonono");
        exit(1);
    }

    printf("\n");

    scanf("%c",&c);

    return n;
}


// move.c
#include "hanoi.h"

void move(int n, char a, char b, char c)
{
    ++x;
    printf("%d",x);
    if(n==1)
    {
        ++cnt;
        printf("%5d : %s%d%s%c%s%c.\n", cnt, "move disk", 1, " from tower ", a, " to tower " , c);
    }
    else
    {
        move(n-1,a,c,b);

        ++cnt;
        printf("%5d : %s%d%s%c%s%c.\n", cnt, "move disk", n, " from tower ", a, " to tower " , c);
        move(n-1,b,a,c);
    }
}
[/code]