程序显示以退出代码 0 结束；

Question

I'm trying to complete this program for class assignment. Pretty much the program displays all the requirements. However, I'm getting a Program ended with exit code:0 added to the output. I checked the code, but I didn't find the error. Can someone tells me how can I remove this message? Thanks for your help.

#include <iostream>
#include <string>

using namespace std;

int main()

{
    string fname, middle, last;
    cout << "Enter a name in the format First Middle Last:" <<endl;
    cin >> fname >> middle >> last;
    cout << fname  << endl;
    cout << middle << endl;
    cout << last <<endl;

    string fname2 = fname.substr (0,1);
    cout <<fname2 ;
    string middle2 = middle.substr (0,1);
    cout <<middle2;
    string last2= last.substr (0,1);
    cout <<last2 <<endl;
    string middle3 = middle.substr (0,3);
    cout << middle3 <<endl;
    string fullname = fname + " " + middle + "" + last + " ";
    string fullname2 = fullname.substr (7,1);
    cout << fullname2 <<endl;
    string fullname4 = fullname;
    cout << fullname.length() <<endl;

}

This is the output:

Enter a name in the format First Middle Last:
Program ended with exit code: 0
Robert anthony Plant
Robert
anthony
Plant
RaP
ant
a
20

Answer 1

Exit code 0 means that the program completed successfully. If everything that happened was exactly what you wanted (besides the exit code message), then you're fine. All correct programs will end with an exit code 0, if there is another error or exit code then that is where there might be a programming problem. It could also have something to do with what platform, IDE, or compiler you are using to run your code.