If Else in Swift

Branching with if and else in Swift is straightforward.

import Foundation

// Here's a basic example.
if 7 % 2 == 0 {
    print("7 is even")
} else {
    print("7 is odd")
}

// You can have an `if` statement without an else.
if 8 % 4 == 0 {
    print("8 is divisible by 4")
}

// Logical operators like `&&` and `||` are often
// useful in conditions.
if 8 % 2 == 0 || 7 % 2 == 0 {
    print("either 8 or 7 are even")
}

// A statement can precede conditionals; any variables
// declared in this statement are available in the current
// and all subsequent branches.
let num = 9
if num < 0 {
    print("\(num) is negative")
} else if num < 10 {
    print("\(num) has 1 digit")
} else {
    print("\(num) has multiple digits")
}

To run this Swift code, you can save it in a file (e.g., if_else.swift) and execute it using the Swift command-line tool:

$ swift if_else.swift
7 is odd
8 is divisible by 4
either 8 or 7 are even
9 has 1 digit

Note that you don’t need parentheses around conditions in Swift, but the braces are required.

Swift also provides a ternary conditional operator ?:, which can be used for simple conditional expressions. However, for more complex conditions, it’s generally better to use a full if statement for clarity.

For in Swift

Switch in Swift

Learn X By Example

Title here

If Else in Swift