CODEWITHSUNDEEP
c++visual-c++visual-studio-2017linker-errors
General Jenkins
General Jenkins

Reputation: 13

How do I fix already defined -main in c++?

I have no background knowledge about programming, only experience I have is a little html coding in school. I literally started 2 days ago learning c++ and currently learning input and output streams, don't even understand debugging yet. I started a Visual Studio Project and wrote a second program, simple hello world, just like in the first. But this time, error occurred, _main is already defined in the .obj of the first program. What does this mean, what is the problem, how can I counter it and keep on working? Error LNK2005 _main I looked up the error code and understood nothing let alone found out how to fix it. Easy answers please. Thanks in advance

Program:

#include "pch.h"
#include <iostream>

using namespace std;

int main() {
    cout << "Hello World2" << endl;
    return 0;
}

Upvotes: 1

Views: 1766

Answers (2)

Vidya Malai
Vidya Malai

Reputation: 1

Create a new project and paste your code in the new file and check. Execution of a program starts from main() method in every programming language, so can't have more than one main() method in the single program."Error LNK2005 _main" occurs when you define main() method more than ones.

Upvotes: 0

PilouPili
PilouPili

Reputation: 2699

If you have two files (.cpp) in your visual studio project each containing a main or _tmain function, link will fail because there can only be one main function defined.

Rename all other main function and you'll be fine.

Upvotes: 1

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