C语言编程:请用1,2,5,7,8,9这六个数字(每个数字至多用一次)来组成一个...答:不算不知道,一算吓一跳,竟然有这么多能被75整除的数。借助全排列函数,末尾是5,其余四位b[4]在a[5]中取,然后判断。include "stdafx.h"include <iostream> include <algorithm> using namespace std;int main(){ int a[5] = { 1,2,7,8,9 },b[4];while (next_permutation(a, a ...