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c++ - 尝试从文本文件打印名字，但同时获取名字和中间名

转载 作者：行者123 更新时间：2023-11-30 04:41:57 26 4
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我正在尝试从格式如下的文本文件中打印名字、中间名和姓氏:

Doe, John Bob
Young, Tim Joe
Washington, George Peter

这是预期的输出:

First name: John
Middle name: Bob
Last name: Doe

First name: Tim
Middle name: Joe
Last name: Young

First name: George
Middle name: Peter
Last name: Washington

我能够正确获取中间名和姓氏，但是当我尝试获取名字时，它显示它是名字和中间名。这是代码:

#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    //Variable for the text file
    ifstream infile;

    //Opens the text file
    infile.open("data.txt");

    //Variables for the names
    string name;
    string lastName;
    string firstName;
    string middleName;

    //Loops through all the names
    while(getline(infile, name))
    {
        //Looks for a comma and space in each name
        int comma = name.find(',');
        int space = name.find(' ', comma+2);

        //Splits the name into first, last, and middle names
        lastName = name.substr(0, comma);
        firstName = name.substr(comma+2, space);
        middleName = name.substr(space+1, 100);

        //Prints the names
        cout << "First name: " << firstName << endl;
        cout << "Middle name: " << middleName << endl;
        cout << "Last name: " << lastName << endl;
        cout << endl;
    }
    //closes the text file
    infile.close();

    return 0;
}//end main

这是我得到的输出:

First name: John Bob
Middle name: Bob
Last name: Doe

First name: Tim Joe
Middle name: Joe
Last name: Young

First name: George Peter
Middle name: Peter
Last name: Washington

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