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if/else if/else works as expected. Conditions must be Bool — Swift doesn't have truthy/falsy values.

let score = 87
if score >= 90 {
    print("A")
} else if score >= 80 {
    print("B")
} else {
    print("F")
}

switch is rich — it must be exhaustive and supports patterns:

let n = 7
switch n {
case 0:
    print("zero")
case 1...10:
    print("low")
case let x where x < 0:
    print("negative: \(x)")
default:
    print("large")
}

No fall-through by default. Cases can match ranges, tuples, types, with guards (where). Most switch statements look like pattern matches.

The ternary cond ? a : b works as in C/JavaScript.