C++迷你控制台UI库编译错误：std::string与std::string*类型转换失败

我正在开发一个用于创建迷你控制台UI的C++库，调用自定义函数slachesDachesMiniUI时出现编译错误，提示无法将std::string转换为std::string*。以下是我的多文件代码及具体编译错误信息，请求帮忙解决该类型转换问题。

main.cpp（测试文件） #

#include <iostream>
#include <string>
#include "miniUI.hpp"

using namespace std;

const int textLenght = 20;

string text[textLenght];

int main(){

    cout << "Running" << endl;
    
    std::string text = "test";
    
    slachesDachesMiniUI(4, 4, text);
    
    return 0;

};

miniUI.cpp（库文件） #

/*
 * Filename: CGUI Lib/src/miniUI.cpp
 * Created Date: Wednesday, November 2nd 2022, 2:36:34 pm
 * Author: Theodore ROY
 * 
 * Copyright (c) 2022 Théodore ROY
 * Licensed under the CC-BY-SA 4.0 International license
 */



#include "miniUI.hpp"
#include <iostream>
#include <string>

using namespace std;



// This Module will look like this : --------------------------------
//                                   |         Text here            |
//                                   --------------------------------

string lines[20];

string slash = "|";


string slachesDachesMiniUI(int lenght, int height, std::string text[]){       //Slashes and dashes based Mini UI 

    if (lenght < 0){
        return "ERROR: Invalid lenght ! please choose a lenght beetween 1 and 15";
    }
    if (lenght > 20) {
        return "ERROR: Invalid lenght ! please choose a lenght beetween 1 and 15";
    }


    if (height < 3){
        return "ERROR: Invalid height ! please choose a height beetween 3 and 15";;          // Sizes verification
    }
    if (height > 20) {
        return "ERROR: Invalid height ! please choose a height beetween 1 and 15";
    }



    for (int i = 0; i < lenght; i++){
        lines[0] = (lines[0] + '-');                        // Calculate line1 (only calculate the numbre of '-' characters to
                                                            // print in the first line
    };

    
    for (int i = 1; i < height; i++) {                      // intermediate line constructor
                                                            // Calculate all the lines beetween the header and the footer
        lines[i] = '|';
        
    
        for (int j = 0; j < lenght; j++){                   
            
            if (i == (height / 2)){     // if the constrctor is at the half of the height

                string textLineSpaces;
                
                if (j == lenght / 2 - text->size() ) {
                    
                        cout << "test" << endl;

                }

                lines[i] = slash;    // number of the line = | + lenght of the line / 2 times ' '

            }
            
        };
    }


    string returnedValue = lines[0] + lines[1] + lines[2] + lines[3];

    return returnedValue;                                

};

miniUI.hpp（头文件） #

#ifndef MINIUI_INTEGRATION
#define MINIUI_INTEGRATION

    #include <string>
    
    std::string slachesDachesMiniUI(int lenght, int height, std::string text[]); //function that create a little windows

#endif //MINIUI_INTEGRATION

编译错误信息 #

/usr/bin/g++ -fdiagnostics-color=always -g "/Users/Theod/Desktop/CGUI-main/source code/main.cpp" -o "/Users/Theod/Desktop/CGUI-main/source code/main"
/Users/Theod/Desktop/CGUI-main/source code/main.cpp:18:5: error: no matching function for call to 'slachesDachesMiniUI'
    slachesDachesMiniUI(4, 4, text);
    ^~~~~~~~~~~~~~~~~~~
/Users/Theod/Desktop/CGUI-main/source code/miniUI.hpp:6:17: note: candidate function not viable: no known conversion from 'std::string' (aka 'basic_string<char, char_traits<char>, allocator<char> >') to 'std::string *' (aka 'basic_string<char, char_traits<char>, allocator<char> > *') for 3rd argument; take the address of the argument with &
    std::string slachesDachesMiniUI(int lenght, int height, std::string text[]);
                ^
1 error generated.

错误核心 #

函数slachesDachesMiniUI声明的第三个参数是std::string text[]，在C++里数组参数会被自动转为std::string*（字符串指针），但你在main里传的是单个std::string对象，类型不匹配直接报错。另外main里同时定义了全局字符串数组和局部字符串变量，局部变量会覆盖全局的，逻辑混乱；函数内部用text->size()也说明你实际需要的是单个字符串，而非数组。

修复步骤 #

1. 修改函数的参数类型 #

把函数的第三个参数从字符串数组改成单个字符串的常量引用（用引用避免拷贝，效率更高）：

miniUI.hpp 修改后：

#ifndef MINIUI_INTEGRATION
#define MINIUI_INTEGRATION

    #include <string>
    
    std::string slachesDachesMiniUI(int lenght, int height, const std::string& text);

#endif //MINIUI_INTEGRATION

miniUI.cpp 修改参数和内部代码：

// 替换参数为const std::string& text
string slachesDachesMiniUI(int lenght, int height, const std::string& text){       

    // 原有长度、高度检查代码保留不变

    for (int i = 1; i < height; i++) {                      
        lines[i] = '|';
        
        for (int j = 0; j < lenght; j++){                   
            
            if (i == (height / 2)){     

                string textLineSpaces;
                
                // 把text->size()改成text.size()，因为现在是引用不是指针
                if (j == lenght / 2 - static_cast<int>(text.size()) ) {
                    
                        cout << "test" << endl;

                }

                lines[i] = slash;    

            }
            
        };
    }

    // 原有返回代码保留不变
};

2. 清理main函数的变量冲突 #

删掉全局的string text[textLenght]，直接传递局部字符串：

main.cpp 修改后：

#include <iostream>
#include <string>
#include "miniUI.hpp"

using namespace std;

int main(){

    cout << "Running" << endl;
    
    std::string text = "test";
    
    slachesDachesMiniUI(4, 4, text);
    
    return 0;

};

额外优化提示 #

• 函数里的全局数组lines[20]建议改成局部变量，避免多次调用时残留上一次的状态。
• 长度检查的提示信息前后不一致（一会说1-15，一会说1-20），建议统一逻辑。
• lenght拼写错误，正确拼写是length。

内容的提问来源于stack exchange，提问作者Equalisys