C++ C++；文件处理类

我发现我在整个程序中反复使用相同的代码。为了提高效率等，我决定实现一个文件处理类，该类允许我与所有文件交互

在创造这一点上，我得到了我无法破译的奇怪错误。例如：

Error   11  error LNK1169: one or more multiply defined symbols found   C:\Users\JG\Desktop\ProjectWork\ConsoleApplication1\Debug\ConsoleApplication1.exe   1   1   ConsoleApplication1

及

---

非常感谢，

您可能在某些标题中缺少“inline”：

struct X { void f(); };
inline void X::f() {} // will be multiply defined without inline.

---

该标题结束

感谢您的解决方案-非常感谢。我所做的是把所有的函数都放到“内联”中，这就解决了问题！确保这些函数定义位于cpp文件中，而不是标头中。

string getFinalLineOfFile(string FileLoction)
{
    //http://bit.ly/1j6h6It
    string line = " ";
    string subLine;
    ifstream readFile(FileLoction);
    string found_DrawID; //Username in the file;

    while (getline(readFile,line)) {

    stringstream iss(line);
    //We are only Interested in the First Value 
        iss >> subLine;
    }

    //The Value at CurrentDrawID will be the final value in the file; 
    return subLine;


}
bool bolFileExist(string FileLocation)
{
    //If that Exists. Return it. 
    ifstream readFile(FileLocation);
    return readFile;
}

bool itemExistLineOne(int find, string FileLocation)
{
    string line = " ";
    //ifstream readFile(".//Draws//Draws.txt");
    ifstream readFile(FileLocation);

    string foundID; //Username in the file;

    while (getline(readFile,line)) {

    stringstream iss(line);
    iss >> foundID;

    //Covert the Integer input to a String for comparison.
    if (to_string(find) == foundID) {
            return true;
      } 

    }

    return false; 
}

void CreateNewFileLine(string Location, string text){

    ofstream output_file(Location, ios::app);
    if (!output_file.is_open()) { // check for successful opening
        cout << "Output file could not be opened! Terminating!" << endl;
    }
    else{
    output_file << text;
    output_file << endl; //Create new line at the end of the file. 
    output_file.close();
    }


}

struct X { void f(); };
inline void X::f() {} // will be multiply defined without inline.