Own definition entrusted to implement various algorithms

func algorithm (num1:Double, num2: Double, sign: Character ),double {

var number:Double

Switch Sign {

Case "+":

Number = NUM1 + num2

Case "-":

Number = Num1-num2

Case "*":

Number = NUM1 * num2

Case "/":

if num2 = = 0 {

Number =0

}Else {

Number = Num1/num2

}

default:

Number =0

}

return number

}

// own definition entrusted to implement various algorithms

let Addnumber: ( Double double character ) double = Algorithm

Addnumber(+)

let Subtractnumber: (Double,double, Character), double = Algorithm

subtractNumber ( 100 10 "-" )

let Mulnumber: ( Double double character ) double = Algorithm

Mulnumber(+, +,"*")

let Dividenumber: (Double,double, Character), double = Algorithm

Dividenumber(+,"/")

Own definition entrusted to implement various algorithms