summation oddity...

[Matt Horton]

Hello...
I am curious about the following behavior:

double a1 = 0;
for( double x = 1; x < g; x++ ){
  a1+= 1/x;
}
// or
for( int x = 1; x < g; x++ ){
  a1+= 1/x;
}

w/ x as double, the summation w/ g == 20 calculates to 3.547739...
w/ x as an int, the summation w/ g == 20 calculates to 1.0
What gives?

[Ron Newman]

If x is an integer, then 1/x is an integer division. It will be 0 for any x other than 1 or -1.

[Matt Horton]

Thanks Ron!