Need help with a program (absolute beginner)

[amicitia]

Hej!
I'm studying C++ and could use all the help provided. This site is like a well in a desert :)
I have to use a repetition and create a program which sums 1 + 1/2 + 1/3+...1/n
I guess the for-loop is appropriate but it seems like I can't write a working one. Little help is needed, thanks :-)
Is there anyone I could bother with my quite dumb questions? :-P

[alex79roma]

Maybe you forgot to cast to double 1/n
try with this code:

#include <iostream.h>

void main() {
	double s = 0;
	long n = 1000000;

	for(long i = 1; i < n; i++)
		s = s + (double) 1/i;  // (double) cast the type of 1/i expression

	cout << "s = " << s << endl;
}