当条件为真或为假时,如何让它返回并再次提问,让用户重新输入值?
这是我想要实现的:

#include <iostream>
#include <string>
#include <sstream>
using namespace std;

int main()
{
    int n;
    cout<<"Enter numbers. Press 5 to stop: ";
    cin>>n;
    bool tr=true;
    while(tr)
    {
        if(n!=5)
            cout<<"You entered "<<n; //How to make it return again, since its false? I keep getting infinite loops :( ;
        else
            tr=false;
    }
    return 0;
}

最佳答案

您需要在 while 循环中提示用户,以便它在每次迭代中发生:

int n;
bool tr = true;
while(tr)
{
  cout << "Enter numbers. Press 5 to stop: ";
  cin >> n;
  if(n!=5) {
    cout << "You entered " << n;
  } else {
    tr = false;
  }
}

关于c++ - 如果条件为真则返回 if 条件,如果为真则返回 while,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/15175902/

10-15 06:10