Swift 간단한 사칙연산

let a = 8
let b = 5
var result: Int

//덧셈
func sum(num1: Int, num2: Int)->Int{
    return num1+num2
} 
result = sum(num1: a,num2: b)
print(result) //13

//뺄셈
func sub(num1: Int, num2: Int)->Int{
    return num1-num2
} 
result = sub(num1: a,num2: b)
print(result) //3

//곱셈
func mul(num1: Int, num2: Int)->Int{
    return num1*num2
} 
result = mul(num1: a,num2: b)
print(result) //40

//나눗셈
func div(num1: Int, num2: Int)->Int{
    return num1/num2
} 
result = div(num1: a,num2: b)
print(result)  //1

//나머지 연산
func rem(num1: Int, num2: Int)->Int{
    return num1%num2
} 
result = rem(num1: a,num2: b)
print(result)  //3