操作方法
#include<iostream> using namespace std; int judge(int a); int main() { int n,t; cout << "请输入一个整数：" << endl; cin >> n; t=judge(n); switch (t) { case 1:cout << "能被3整除" << endl; break; case 3:cout << "能被5整除" << endl; break; case 5:cout << "能被7整除" << endl; break; case 4:cout << "能被3和5整除" << endl; break; case 6:cout << "能被3和7整除" << endl; break; case 8:cout << "能被5和7整除" << endl; break; case 9:cout << "能被3、5和7整除" << endl; break; default:cout << "不可以被3、5和7整除" << endl; } system("pause"); } int judge(int a) { int t = 0; if (a % 3 == 0) t = 1; if (a % 5 == 0) t = t + 3; if (a % 7 == 0) t = t + 5; return t; }