why my code is showing error undefined reference to `WinMain@16'?

Question

I wanted to use a function which I have defined on file h3.cpp in main.cpp for which I created a file h3.h and declared that particular function in the header file. but my file h3.cpp is not getting compiled and showing error--

undefined reference to `WinMain@16'--

//main.cpp
#include<iostream>
#include"h3.h"

using namespace std;
int main(){
    intlog();
    log("hello");

    return 0;
}

//h3.cpp

#include<iostream>
#include"h3.h"
void log(const char* message){
    std::cout<<message<<std::endl;
}
void intlog(){
    log("world");
}

//h3.h(HEADER FILE)

#pragma once
#include<iostream>
void log(const char* message);
void intlog();

Are you building h3.cpp as well as main.cpp? https://stackoverflow.com/a/12574400/4143855 — Tas, Jul 17 '19 at 05:38
If this is VisualStudio make sure you create your project as a console application rather than a windows application. The latter has a different entry point (`WinMain`) than the standard `main` function. — Miles Budnek, Jul 17 '19 at 05:48
@MilesBudnek i am using code blocks and i have created a console application — PNcoder258, Jul 17 '19 at 09:35

273K · Accepted Answer · 2019-07-17T15:14:44.283

2

Do changes in the project settings if you are using Visual Studio.

Go to the Project menu, your project properties, Linker, System and change the SubSystem option from Windows (/SUBSYSTEM:WINDOWS) to Console (/SUBSYSTEM:CONSOLE) via the drop-down list.

Do changes in the project/target options if you're using Code::Blocks.

Goto Build Targets, the default setting for Type: GUI application - is incorrect for your project, change it to Console application via the drop-down list.

edited Jul 17 '19 at 15:14

answered Jul 17 '19 at 06:04

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i am not getting such option in project setting. i am using code blocks. see this https://ibb.co/dKKD6cg – PNcoder258 Jul 17 '19 at 09:31
This menu structure is not from Code::Blocks. – BsAxUbx5KoQDEpCAqSffwGy554PSah Nov 11 '22 at 14:10
@BsAxUbx5KoQDEpCAqSffwGy554PSah Read the answer carefully and completely. – 273K Nov 11 '22 at 14:22

why my code is showing error undefined reference to `WinMain@16'?

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