Thread: no output

i am new to Linux and c++. i am using the g++ compiler and have done the standard hello world program but i am not getting the output , here is my code /*
#include <iostream.h>

int main ()
{
cout << "Hello World!\n";
return 0;
}
*/
i am using the shell and get no reports of errors
at the propmpt i type "g++ test.cpp -o test"
am i right in thinking that the hello world should appear in the shell