Calculate a Ratio in C#

Question

I thought this would be simple, but searching Google didn\'t seem to help.

I\'m basically trying to write a function which will return a ratio as a string (eg 4:3) w

Answer 1

You can simplify fractions by dividing numerator and denominator by their GCD:

var gcd = GCD(A, B);
return string.Format("{0}:{1}", A / gcd, B / gcd)

And a very basic function for calculating the GCD, using the Euclidean algorithm:

static int GCD(int a, int b) {
    return b == 0 ? Math.Abs(a) : GCD(b, a % b);
}