Rounding to the nearest 5 cents in Swift or C

RoundingToNearest5Cent.swift

// Basic C, but being used in a Swift project of mine.
// Just a simple way of getting any floating number to round up or down to a 5 cent figure for calulations.

let x = 45.23
let y = 23.58
let z = 82.12

a = round(x/0.05)*0.05
b = round(y/0.05)*0.05
c = round(z/0.05)*0.05

print(a) // 45.25
print(b) // 23.60
print(c) // 82.10