help with VI and gcc T_T
 

iv'e already installed gcc, im trying to compile my hello_world.cpp but it produces an error(is my command correct -->> "[dinglej@localhost bin]$ gcc hello_world.cpp")...wah..dunno what's wrong with my set-up...here's the error...

hello_world.cpp: In function `int main()':
hello_world.cpp:5: error: `cout' undeclared (first use this function)
hello_world.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)

help pls..

You should use g++ to compile C++ code. Also, did you remember to put "using namespace std;" or use std::cout? Modern C++ compilers expect that the correct namespace (std) be used.

lol...there's something wrong with my command...bwahahah...the correct command to use is...

[dinglej@localhost bin]$ g++ sample.cpp -o sample

then run it using this command...

[dinglej@localhost bin]$ sample

hahahah...nyay

:D

post your code. Sounds like stdio.h is not included.

Edit: just re-read the post. I'm just an old perl / c programmer, so not sure if that's needed for c++, so ignore this post.

here's my code
#include <iostream>

int main(){

std::cout << "Hello World!" << std::endl;
return 0;
}

i now know how to compile...nyehehe...my command was so so so wrong...nyay...thank you everyone..bwahaha...funny me..
:D

I just copied your code to a text file, added a newline to the end, and used the commmand:

g++ hw.cpp -o sample

and got a good compile

./ sample

properly printed out the "Hello World" statement

So, I don't think it's a problem with your code, something is missing in your install.

I'm not a c++ programmer, so guess I'll leave it to the experts.