Conditional statements

A conditional statement checks a condition and executes a block of code only if the condition is true. Swift provides both the if and if...else conditional statements. Let's take a look at how to use these conditional statements to execute blocks of code if a specified condition is true.

The if statement

The if statement will check a conditional statement and, if it is true, it will execute the block of code. This statement takes the following format:

if condition { 
    block of code
}

Now, let's take a look at how to use the if statement:

let teamOneScore = 7 
let teamTwoScore = 6
if teamOneScore > teamTwoScore { 
    print("Team One Won")
}

In the preceding example, we begin by setting the teamOneScore and teamTwoScore constants. We then use the if statement to check whether the value of teamOneScore is greater than the value of teamTwoScore. If the value is greater, we print Team One Won to the console. When...