Can't compile

[Sanity Pig]

As some other threads I have looked at stated, I am a very new member, working on my very first C++ program as we speak.

I would be much further on with my new career in C++ if only my code would compile.

Using this program:

//This is my first C++ program
#include <iostream>
using namespace std;

main()
{
    cout << "Hello world!";
    return 0;
}

When I try to compile it it says this: ""HelloWorld - Debug" uses an invalid compiler. Skipping...
Nothing to be done."

Now my only prior experience with programming is in Java with Eclipse.
Code::Blocks and Visual C++ are apparently very different IDEs and I really have no idea what is going on.

So my main issue is that I can't compile. If anyone knows what is wrong, go ahead and tell me!
Thanks!

I'm using Visual C++ as a compiler through Code::Blocks (I hope) if that helps.

[jloundy]

//This is my first C++ program
#include <iostream>
using namespace std;

int main() // always int main()
{
    cout << "Hello world!";

    return 0;
}

[Sanity Pig]

Oh my god I feel like a moron.
Hours (not litterally) of scouring the interwebz for something so obvious.

EDIT: Well I did that and I am still getting the same problem... but thanks for the tip.

Is is possibley because I didn't set it to either "debug" or "release"? (Whatever those mean)

[helios]

Things to check:
1. Your filename is ends with ".cpp". Most C++ compilers also come with C compilers. If the filename matches the C pattern (.c), the compiler will automatically choose the C compiler.
2. You created a C++ project, not a C project.

Debug and release are compilation methods. There are differences between compilers, but basically it's like this: debug doesn't optimize and leaves debugging information so a debugger can run the program and provide information such as the values of variables. Release optimizes and doesn't leave debugging information.

[jloundy]

what helios said,
make sure that your source code is a .cpp (c ++) not .c ( standard C)

[Sanity Pig]

It is .cpp.

[z05DSL3A]

"...uses an invalid compiler" suggests that Code::Blocks is not configured properly.

[Sanity Pig]

I've gone to file > properties > advanced > and saw that it (for some reason) had "GNU GCC Compiler", and not Visual C++'s compiler.

I've tried to change it and it seems to not let me.
I'm sorry that this is becomming more of a support question instead of a programming one.

Went to Settings > Compiler and debugger > selected the correct compiler (Visual C++), and it still doesn't seem to be doing anything.

EDIT: Now I'm getting this "fatal error LNK1169: one or more multiply defined symbols found"

EDIT EDIT: I fixed it! (had a second file in there, didn't realize it)