In this tutorial, we will learn about for loops in Swift. We will cover the basics of iterative execution using for loops.
A for loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. The loop is typically used when the number of iterations is known before entering the loop.
The syntax for the for loop in Swift is:
for item in iterable {
// Code block to be executed
}
The for loop iterates over each item in the iterable object (such as a range or an array) and executes the code block for each item.
for i in 1...10 {
print("(i) ", terminator: "")
}
1 2 3 4 5 6 7 8 9 10
let n = 5
var factorial = 1
for i in 1...n {
factorial *= i
}
print("Factorial of (n) is (factorial)")
Factorial of 5 is 120
let arr = [1, 2, 3, 4, 5]
var sum = 0
for num in arr {
sum += num
}
print("Sum of the elements in the array is (sum)")
Sum of the elements in the array is 15