Define a Function with Parameters in Swift

Swift – Function with Parameters

To define a function that can accept arguments, specify the parameters with respective types in the parenthesis of function definition.

The syntax to define a function with parameters is

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func functionName(parameter1: <T>, parameter2: <T>) {
    //body
}

In the following example, we define a function add that accepts two Int values and print their sum.

main.swift

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func add(a: Int, b: Int) {
    let result = a + b
    print("The result is \(result)")
}

add(a: 4, b: 3)

Output

In this Swift Tutorial, we learned how to define a function with parameters in Swift programming.