Question

我将向量作为参数传递给类函数时遇到了一些问题。类在另一个文件中。这是我的代码：

main.cpp中：

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

#include "class1.h"

using namespace std;

int main() {

    vector<string> names;

    names.push_back("Bob");
    names.push_back("Gorge");
    names.push_back("Bill");
    names.push_back("Freddy");
    names.push_back("Daniel");
    names.push_back("Emily");


    class1 obj;
    obj.printVector(names);

    system("pause");
}

class1.h：

#pragma once

class class1
{
public:
    void printVector(std::vector<string>& names);
};

class1.cpp：

#include <string>

#include "class1.h"

using namespace std;

void class1::printVector(vector<string>& names) {

    for (unsigned int i = 0; i < names.size(); i++)
    {
        cout << names[i] << endl;
    }
}

我尝试用其他数据类型（int，char，floats ......）做同样的事情并且它有效。另外，当我将它们传递给main.cpp中的函数时，它可以工作。错误是：

- Severity  Code    Description Project File    Line    Suppression State
Error   C3203   'allocator': unspecialized class template can't be used as a template argument for template parameter '_Alloc', expected a real type    tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.h  6

- Severity  Code    Description Project File    Line    Suppression State
Error   C3203   'allocator': unspecialized class template can't be used as a template argument for template parameter '_Alloc', expected a real type    tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.h  6

- Severity  Code    Description Project File    Line    Suppression State
Error   C2923   'std::vector': 'string' is not a valid template type argument for parameter '_Ty'   tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.h  6   

- Severity  Code    Description Project File    Line    Suppression State
Error   C2923   'std::vector': 'string' is not a valid template type argument for parameter '_Ty'   tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.h  6   

- Severity  Code    Description Project File    Line    Suppression State
Error   C2065   'string': undeclared identifier tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.h  6   

- Severity  Code    Description Project File    Line    Suppression State
Error   C2065   'string': undeclared identifier tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.h  6   

- Severity  Code    Description Project File    Line    Suppression State
Error   C2664   'void class1::printVector(std::vector &)': cannot convert argument 1 from 'std::vector<std::string,std::allocator<_Ty>>' to 'std::vector &' tesst   c:\users\...\documents\programs and games\tesst\tesst\main.cpp  22  

- Severity  Code    Description Project File    Line    Suppression State
Error   C2511   'void class1::printVector(std::vector<std::string,std::allocator<_Ty>> &)': overloaded member function not found in 'class1'    tesst   c:\users\...\documents\programs and games\tesst\tesst\class1.cpp    9

请帮忙！谢谢

Answer 1

class1.h不包含<string>或<vector>.

在“<string>包含class1.h（不是你应该依赖的东西！）之前，你恰好在你的源文件中包含vector这一事实”，你已经“忘掉了”前一个遗漏。

在后一种情况下，class1.cpp根本不知道z[i].childNodes[1].childNodes[3].childNodes[1].childNodes[1].childNodes[0].onclick=function(){ document.getElementsByClassName('cq-proceed')[0].style="display:block !important;"; var q = document.getElementsByClassName('hide_me'); for(var r = 0; r < q.length; r++){ q[r].style="display:none;"; } }的含义。

修复您的包含。

Answer 2

您的问题不在于将参数传递给类。以下代码适用于此：

{{1}}

正如Orbit中Lightness Races之前提到的，你的问题不包括向class1的vector和string

字符串向量未传递给类函数

2 个答案: