Hello World!

[Bjørnar Libæk]

Trying to build the helloworld program (below).
When building, I get this:

g++ -c -o main.o -MD -I/usr/include -I/usr/include/g++-3 main.cpp
HelloWorld/main.cpp: In function `int main(int, char**)':
"main.cpp": HelloWorld/main.cpp error: `cout' undeclared in namespace  
`std' at line 6
"main.cpp": HelloWorld/main.cpp error: `endl' undeclared in namespace  
`std' at line 6
"main.cpp": HelloWorld/main.cpp error: `cout' undeclared in namespace  
`std' at line 7
"main.cpp": HelloWorld/main.cpp error: `cin' undeclared in namespace `std'  
at line 9
"main.cpp": HelloWorld/main.cpp error: `cout' undeclared in namespace  
`std' at line 11
"main.cpp": HelloWorld/main.cpp error: `endl' undeclared in namespace  
`std' at line 11
 GNU C++ Compiler exited with error code: 1
Build cancelled due to errors


However, if I remove the "-I/usr/include/g++-3" option, it builds and runs  
ok. The g++-3 directory is present, and readable.

sh#> locate iostream.h
/usr/include/c++/3.3/backward/iostream.h
/usr/include/c++/3.4/backward/iostream.h
/usr/include/g++-3/iostream.h
sh#>

Why the errors?


[main.c]
#include <iostream>

int main(int /*argc*/, char* /*argv*/[])
{
  std::cout << "Hello world!" << std::endl;
  std::cout << "Please enter a character and press return:";

  std::cin.get();

  std::cout << "Goodbye world!" << std::endl;
  return 0;
}
[/main.c]