hello world in g++

Chris Weimer · 02-21-2004, 11:14 PM

# include <cstdio>

int main()
{
printf("Hello, World!");
getchar();
}

chewysplace · 02-21-2004, 11:15 PM

yeah, that prog that i posted here, compile it using g++ -Wall

Longinus · 02-21-2004, 11:19 PM

hrm what does the -Wall option do

chewysplace · 02-21-2004, 11:33 PM

Warning all. basicly it tells you everyting that is and might be wrong.

jinksys · 02-22-2004, 11:00 PM

Quote:

Originally posted by Longinus
i guess g++ doesnt like the old header formats....

C++ headers do not have the .h extention. In your /usr/include/g++ directory you should
have iostream and backward/iostream.h. iostream.h basically just includes iostream and prints
the deprecated error.

So while your program will still work if you include iostream.h, its best to follow the standard and
include iostream.

Thetargos · 02-22-2004, 11:33 PM

Quote:

Originally posted by 320mb

Code:

#include <iostream> #include <string> using namespace std; int main() { printf("hello world"); return 0; }

worked for me , try it.....

It may be as simple as:

Code:

#include <iostream>
using namespace std;

int main()
{
     cout << hello world;
     return 0;
}

jinksys · 02-22-2004, 11:56 PM

This wont work,

Code:

#include <iostream>
using namespace std;

int main()
{
     cout << hello world;
     return 0;
}

but this will...

Code:

#include <iostream>
using namespace std;

int main()
{
     cout << "hello world";
     return 0;
}

Thetargos · 02-22-2004, 11:58 PM

Damn quotes, I keep forgetting them! :slap: