CAI 711 - Week 4 P1

CAI - 711
Recap- Milestone

Week 4- P1
Topic : Getting started with swift programming
Subtopic: Recap and Milestone

Learning Objectives

1. Recap topic 1 - Subtopics

2. Milestone Task1, task 2 and Task 3 to be completed

Multiple Choice

What feature of swift makes the programming language safe to use?

• Type inference

• type error

• type safety

• type data

Multiple Choice

How do you display "Hello World" in Swift?

• print("Hello World")

• echo("Hello World")

• System.out.println("Hello World")

• console.log("Hello World")

Multiple Choice

Which keyword is used to declare a constant in Swift?

• let

• var

• constant

• final

Declared with let, values are fixed after initialization.

​Constants

Declared with var, values can be changed.

​Variables

Variables vs. Constants

​Example

var myVariable = 10

myVariable = 20 // Allowed

let myConstant = 10

myConstant = 20 // Error: Cannot assign to value: 'myConstant' is a 'let' constant

Arithmetic Operators

var sum = 10 + 5

var difference = 10 - 5

var product = 10 * 5

var quotient = 10 / 5

var remainder = 10 % 3

Compound Operators

var number = 10

number += 5 // Equivalent to number = number + 5

​Boolean Operators

let isSunny = true

let isWeekend = false

if isSunny && isWeekend {

print("Perfect day for a picnic!")

}

​Switch Syntax

let day = 3

switch day {

case 1:

print("Monday")

case 2:

print("Tuesday")

case 3:

print("Wednesday")

default:

print("Another day")

}

Complete and SUBMIT - MILESTONE TASK1, TASK 2, TASK 3

Poll

What is completed?

• only task 1

• Task 1 and Task 2 started

• Task 1, Task 2 Completed.
  Task 3 Started

• All Completed