An if statement chooses which block runs after checking a Boolean condition.

Choose a label

conditionals.swift
let temperature = 
let label: String

if temperature >= 80 {
    label = "hot"
} else if temperature >= 60 {
    label = "warm"
} else {
    label = "cool"
}

print("temperature=\(temperature)")
print("label=\(label)")
let temperature = 
let label: String

if temperature >= 80 {
    label = "hot"
} else if temperature >= 60 {
    label = "warm"
} else {
    label = "cool"
}

print("temperature=\(temperature)")
print("label=\(label)")
let temperature = 
let label: String

if temperature >= 80 {
    label = "hot"
} else if temperature >= 60 {
    label = "warm"
} else {
    label = "cool"
}

print("temperature=\(temperature)")
print("label=\(label)")
if else Use `if` for the true branch and `else` for the fallback branch.