c++中如何将int转换为字符串 [英] How do you convert an int into a string in c++

问题描述

我想将一个 int 转换为一个字符串，以便可以对其进行计算.此代码未按预期工作:

I want to convert an int to a string so can cout it. This code is not working as expected:

for (int i = 1; i<1000000, i++;)
{ 
    cout << "testing: " +  i; 
}

推荐答案

您应该按照以下方式进行操作 -

You should do this in the following way -

for (int i = 1; i<1000000, i++;)
{ 
    cout << "testing: "<<i<<endl; 
}

<< 运算符将负责适当地打印值.

The << operator will take care of printing the values appropriately.

如果您还想知道如何将整数转换为字符串，那么下面是使用 字符串流 -

If you still want to know how to convert an integer to string, then the following is the way to do it using the stringstream -

#include <iostream>
#include <sstream>

using namespace std;

int main()
{
    int number = 123;
    stringstream ss;

    ss << number;
    cout << ss.str() << endl;

    return 0;
}

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