C 编程对‘WinMain@16’的未定义引用

Question

I'm trying to compile following code using gcc (tdm-1) 4.7.1 with notepad, and command prompt on windows 10. previously add bin folder path to global variables,but when i try to compile i get following error " undefined reference to `WinMain@16'".However same code works fine with codeblocks!.

PS: I compile it like this "cd /d path of code then gcc filename.c"

#include<stdio.h>

int main(){

    printf("Hello world");
    return 0;
}

Answer 1

我偶然发现出了什么问题。通过记事本编写代码后，我忘记保存文件 ctrl+s，所以我只是尝试编译空文件。

Answer 2

This is strange.

gcc --version

gcc.exe (tdm64-1) 5.1.0 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

Without any options I get

gcc filename.c
a.exe

Hello world

Notice however

gcc -municode filename.c

Generates a linker error

D:/bin-win64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../x86_64-w64-mingw32/lib/../lib/libmingw32.a(lib64_libmingw32_a-crt0_w.o) : In function wmain : C:/crossdev/src/mingw-w64-v4-git/mingw-w64-crt/crt/crt0_w.c:23 : undefined reference to wWinMain collect2.exe : error: ld returned 1 exit status

The startup function in MinGW is mainCRTStartup , which calls main. If there is no user specified main , the runtime provides one for you, that one calls WinMain .

So your app should compile from the command line as well.