Check out example codes for "swift 5 if statement". It will help you in understanding the concepts better.

Code Example 1

let a = -5

// if the condition is true then doThis() gets called else doThat() gets called
a >= 0 ? doThis(): doThat()

func doThis() {
    println("Do This")
}

func doThat() {
    println("Do That")
}

Code Example 2

// if expression {
// 	do something
// }

var a: Int = 3
if a == 3 {
	print("Hello World")
} else if a < 3 {
	print("dlroW olleH")
} else {
	print("42")
}

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