This line is read "pound include i-o-stream dot
h". The
effect of this line is to essentially "copy and paste" the entire file iostream.h into your own file at this line. So you
can think of
this syntax as replacing
the line #include
<iostream.h> with the contents of the file iostream.h. #include is known as a preprocessor directive.
//include this
file for cout
#include
<iostream.h>
int main()
{
//print out the text string,
//"Hello, World!"
cout << "Hello,
World!"
<< endl;
return 0;
}