iostream.h header file absent

sudo apt-get install build-essential

btw, if you use:

void main (void)

you don't have to have the silly return 0 on the end ;)

What about changing "<iostream.h>" to "<iostream>" ?

changrd "<iostream.h>" to "<iostream>" & compiled
Result:
test.cpp: In function ‘int main()’:
test.cpp:4: error: ‘cout’ was not declared in this scope

you need:

return 1

in the main part as you have defined main as returning int.

thank you joey.
Also, why is this so?
what about "cin" command?
I can't get sin , cos ,... math functions using math.h

If you use:

#include <iostream>
using namespace std;
void main()
{
  cout << "Hello World\n";
}

Then you avoid it

for cin use something like:

#include <iostream>
using namespace std;
void main()
{
  int age;
  cout << "Please tell me your age : ";
  cin >> age
  cout << "You are " << age*365 << " days old!" << endl;
}

Oh takes me back....

Thanks joey.blacksmith, that solved my question.

I get the following error when trying to compile a cpp program:
  in function main:
  undefined reference to 'std::cout'
What am I missing?