Question

我找不到这部法典中的错误,任何人都可以让我了解情况? 我 ran倒,但错误是无法理解的。

#include "stdafx.h"
#include <iostream>

using namespace std;

int main() 
{ 
  string name; 
  cout << "Input your name please?" << endl; 
  cin >> name; 

  if
      {
          (name == "Bart Simpson")  
    cout << "You have been very naughty" << endl; 
  }
return 0;
}

Answer 1

问题:

You have some missing #includes, which probably caused your initial compiler errors.
You have a simple syntax error with your if statement.
Using the stream extraction operator will never yield a string with whitespace inside of it.

你们期望以下工作:

#include "stdafx.h"
#include <iostream>
#include <ostream>
#include <string>

using namespace std;

int main()
{
    cout << "Input your name please?" << endl;

    string name;
    getline(cin, name);
    if (name == "Bart Simpson")
    {
        cout << "You have been very naughty" << endl;
    }

    return 0;
}

(You need to include string for std:string and std:getline, and ostream for std:endl

Answer 2

I assume the bracket in the wrong place is just a problem when pasting the code

如果(名称=“Bart Simpson”)

。当它遇到白色空间时,它只能是Bart>。也许你们想要使用<条码>(目标)?

Answer 3

应

if (name == "Bart Simpson")
{
    cout << "You have been very naughty" << endl;
}

And you need to include <string>

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