cout issue

[toontastic]

Are you sure that you pasted the correct contents of "hello.cpp"? Your compilation error message says that "cout" was not declared in line 6, but line 6 is actually "return 0;". Is it possible that in fact your IDE tries to compile your old code?

Hmmmm not sure, I'll try again deleting everything and creating a new project and let you know.

[toontastic]

Right tried again, I had it set to Build Automatically so didn't get the build error but got the error

Description Resource Path Location Type
Symbol 'cout' could not be resolved brandnew.cpp /Brand New line 5 Semantic Error

Code I used was

#include <iostream>

int main()
{
    std::cout << "Hello World!\n";
    return 0;
}

[steeldriver]

Right tried again, I had it set to Build Automatically so didn't get the build error but got the error

Description Resource Path Location Type
Symbol 'cout' could not be resolved brandnew.cpp /Brand New line 5 Semantic Error

Code I used was

#include <iostream>

int main()
{
    std::cout << "Hello World!\n";
    return 0;
}

So you are using some kind of IDE (code::blocks maybe?) - what happens if you just open a terminal, cd to the directory containing the file 'brandnew.cpp', and try to compile and link on the command line

g++ -o brandnew brandnew.cpp

[toontastic]

Ok I did

cd Brand\ New

Then I wrote

g++ -o brandnew brandnew.cpp

and I got no response at all. So I tried

g++ -o brandnew.cpp

and I got the error

g++: fatal error: no input files
compilation terminated.

[steeldriver]

g++ will give no response if compilation succeeds - basically that means there were no errors and it was able to resolve std::cout correctly

Unfortunately

g++ -o brandnew.cpp

probably overwrote your source code file (-o means output so it will try to create the executable program but give it the name 'brandnew.cpp' instead of plain 'brandnew')

I suggest creating the .cpp file again, running

g++ -o brandnew brandnew.cpp

and then checking if the executable was produced

ls -l

and if so trying to run it

./brandnew

BTW if your IDE uses Makefiles under the hood you may run in to trouble if your build directory name contains spaces - just a heads up

[toontastic]

g++ will give no response if compilation succeeds - basically that means there were no errors and it was able to resolve std::cout correctly

Unfortunately

g++ -o brandnew.cpp

probably overwrote your source code file (-o means output so it will try to create the executable program but give it the name 'brandnew.cpp' instead of plain 'brandnew')

I suggest creating the .cpp file again, running

g++ -o brandnew brandnew.cpp

and then checking if the executable was produced

ls -l

and if so trying to run it

./brandnew

BTW if your IDE uses Makefiles under the hood you may run in to trouble if your build directory name contains spaces - just a heads up

Oooooo excellent that worked I was able to finally see Hello World!
Ok I'll make sure I leave out the spaces now.

Right it seems I've done something funny in terms of IDEs in Eclipse. Is there a way to fix this so I don't have to use terminal and can infact just run the programs in Eclipse ?

[toontastic]

Ok very strangly after doing that in terminal it now builds fine and returns Hello World! in Eclipse as well now.

Thank you all very much for your help.