multiple definition of '_main'

This is a discussion on multiple definition of '_main' within the C++ Programming forums, part of the General Programming Boards category; Hi guys I am using IDE: code::block OS: XP I am trying to link a few files together, some of ...

  1. #1
    Registered User
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    multiple definition of '_main'

    Hi guys

    I am using
    IDE: code::block
    OS: XP

    I am trying to link a few files together, some of the c codes belong to other programmers and have their own main function.

    If i want to use them, how can i compile them together? because if i put them in the same projects, i get an error of (Multiple definition of '_main')

    Thanks in advance

    Grasshopper Esq

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
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    Only one file must have a "main" function. That simple.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #3
    Cat without Hat CornedBee's Avatar
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    So kick out or rename all mains except the one you actually want to start the program at.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

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