Basic Maths C# Not Working

Question

Why won't either of these work in C# ??

// Expected: 0.5, Output: 0

Console.WriteLine("Result #1: " + (50 / 100));

int iFifty = 50;
int iOneHundred = 100;
Console.WriteLine("Result #2: " + (iFifty / iOneHundred));

Answer 1

it is an integer division, you need doubles:

Console.WriteLine("Result #1: " + (50 / 100d));

Or:

Console.WriteLine("Result #1: " + (50 / 100.0));

If both operands are integer, an integer division is performing therefore you get an integer result.If you use 'd' literal you explicitly state that number should be considered as double and other operand is promoted to double automatically, then a double division is performing and you get the correct result.See C# Specification Section 2.4.4 Literals for more info about literals and also you migh want take a look at Floating-Point Types in C#