day 4 Flashcards
1
Q
arc4random()
A
generates a random number
2
Q
func syntax
A
func nameOfFunction() {
// body of function goes here
}
3
Q
function type
A
func sayHelloToStudent(student: String) {
print("Hello \(student)")
}
4
Q
multiple func paramters
A
greetStudent(student: String, school: String)
5
Q
multiple func paramters example
A
func averageScore(firstScore: Double, secondScore: Double, thirdScore: Double) {
let totalScore = firstScore + secondScore + thirdScore
print(totalScore / 3)
}
6
Q
To return a value from a function
A
func calculateTip(priceOfMeal: Double) -> Double {
return priceOfMeal * 0.15
}
func isPastBedtime(hour: Int) -> Bool {
if hour > 9 {
return true
} else {
return false
}
}
7
Q
boolean
A
var name=True print(name)
8
Q
if true do something
A
if true{print(“hi”}
9
Q
if statement needs
A
boolean to check
10
Q
else only executes
A
if condition false
11
Q
else if
A
to add extra conditions
12
Q
else statement always
A
last statement
13
Q
user input
A
readline()
14
Q
var password=
A
readline()
15
Q
while code
A
while true{print(“hi”}
16
Q
how to specify return value
A
->Int{}
17
Q
return add
A
func add()->Int{
var number=1+1
return number
}
18
Q
end of year bonus
A
func endOfYearBonus(basePay: Double, bonus: Double,percentBonus: Double)->(Double){
let percentBonus=0.10
return basePay + bonus + (basePay * percentBonus)
}
19
Q
Internal and External Parameter Names
A
func addValues(value1 x: Int, value2 y: Int) -> Int {
// internally, use `x` and `y`
return x + y
}
// externally, use `value1` and `value2` addValues(value1: 5, value2: 10)
20
Q
Omitting External Parameter Names example
A
func combineStrings(_ s1: String, _ s2: String) -> String {
return s1 + s2
}
combineStrings(“We love”, “ Swift!”)
