C经典算法之m元素集合的n个元素子集

#include <stdio.h> 
#include <stdlib.h> 

#define MAX 20 

int main(void) { 
    int set[MAX]; 
    int m, n, position; 
    int i; 

    printf("输入集合个数 m："); 
    scanf("%d", &m); 
    printf("输入取出元素 n："); 
    scanf("%d", &n); 

    for(i = 0; i < n; i++) 
        set[i] = i + 1; 

    // 显示第一个集合 
    for(i = 0; i < n; i++) 
        printf("%d ", set[i]); 
    putchar('\n'); 
    
    position = n - 1; 

    while(1) { 
        if(set[n-1] == m) 
            position--; 
        else 
            position = n - 1;