如何在C中连接字符串和整数？

发布时间：2020-12-16 10:40:51 所属栏目：百科来源：网络整理

导读：参见英文答案 How to concatenate a std::string and an int?????????????????????????????????????29个我试图连接字符串和整数如下： #include "Truck.h"#include string#include iostreamusing namespace std;Truck::Truck (string n,string m,int y){ na

参见英文答案 > How to concatenate a std::string and an int?????????????????????????????????????29个
我试图连接字符串和整数如下：

#include "Truck.h"
#include <string>
#include <iostream>

using namespace std;

Truck::Truck (string n,string m,int y)
{
    name = n;
    model = m;
    year = y;
    miles = 0;
}

string Truck :: toString()
{

    string truckString =  "Manufacturer's Name: " + name + ",Model Name: " + model + ",Model Year: " + year ",Miles: " + miles;
    return truckString;
}

我收到此错误：

error: invalid operands to binary expression ('basic_string<char,std::char_traits<char>,std::allocator<char> >'
      and 'int')
        string truckString =  "Manufacturer's Name: " + name + ",Miles...

我有什么想法可能做错了吗？我是C的新手.

解决方法

在C 03中,正如其他人所提到的,你可以使用在< sstream>中定义的ostringstream类型：

std::ostringstream stream;
stream << "Mixed data,like this int: " << 137;
std::string result = stream.str();

在C 11中,您可以使用std :: to_string函数,该函数在< string>中方便地声明：

std::string result = "Adding things is this much fun: " + std::to_string(137);

希望这可以帮助！

（编辑：李大同）

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