Visual C ++中的Hello World程序给出错误

Question

I've installed visual studio 2012. I wrote a simple "hello world" program in a new project. Here's the code:

#include <iostream>
int _main()
{
    cout<<"Hello world";
    cin.get();
    return 0;
}

When the use of precompiled headers was on, I got error related to stdafx.h so I turned precompiled headers off and removed #include stdafx.h .

Now I get these strange error messages:

• error C2018: unknown character '0x3'
• error C2018: unknown character '0x4'
• error C2018: unknown character '0x40'
• error C2146: syntax error : missing ';' before identifier 'ÿÿ¸'
• error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

And many more similar errors causing the build to fail. The error is given by cl.exe to each and every line of the code.

Things I have tried so far:

• created an empty project with just 1 .cpp file including that code;
• tried using std::cout ;
• tried using int main() instead of int _main() ;
• tried using namespace std ;
• tried the same things on Visual Studio 2010.

Answer 1

1. Coding a consoleapplication in Viusal Studio and removing the include of the precompiled header gives you an error.

2. Look at your Linker-Properties (rightclick your project, select Properties and then select Linker - System). Be sure that you selected the SUBSYSTEM Console. Under Linker - Advanced you find your entry point. Be sure that your entry point = the name your main int.

3. Maybe look at this: visual c++ 2010 errors importing User32.dll into 64bit win7

Answer 2

Guys I realized a strange thing. When I open VS and build for the first time, it builds successfully, but if I rebuild, it gives error. So each time I make a change in the code and compile, it gives the same errors. But if I close VS and open again and try, it works.