C++ int 转字符串

先说最简单的方法

int i = 0;
string rel =  to_string(i);

第二种

int i = 0;
string str;
stringstream stream;
stream << i;
 stream >> str;

第三种

int i = 0;
char t[256];
string str2;
_itoa_s(i, t,sizeof(t), 10);//visual 2019 里用的是_itoa_s 其他我看有用itoa的，具体参见自己环境版本
str2 = t;

以下是练习的一些代码

#include <iostream>
#include<string>
#include <vector>
#include<sstream>


using namespace std;

int main()
{
    string text;

    char t[256];
    string num;
    string num2;

    cout << "输入字符串" << endl;
    int i = 0;
    while (getline(cin,text))
    {
        stringstream stream;
        i++;
        stream << i;
        stream >> num2;
        _itoa_s(i, t,sizeof(t), 10);
        string rel = to_string(i);
        num = t;
        const type_info &t1 = typeid(num);
        const type_info &t2 = typeid(num2);
        cout << "num1:" + num + "type:"  << endl;
        cout << t1.name() << endl;
        cout << typeid(text).name() << endl;
        cout << "num2:" + num2 + "type:" << endl;
        cout << t2.name() << endl;
        cout << rel
            + text << endl;
    }
    

    std::cout << "Hello World!\n";
}

如有不妥，欢迎指正