In this tutorial, we will learn about else-if statements in Swift. We will cover the basics of conditional execution using if-else-if statements.
An else-if statement is a conditional statement that allows multiple conditions to be tested sequentially. It provides a way to execute different code blocks based on different conditions.
The syntax for the else-if statement in Swift is:
if condition1 {
// Code block to execute if condition1 is true
} else if condition2 {
// Code block to execute if condition2 is true
} else {
// Code block to execute if none of the conditions are true
}
The else-if statement evaluates the specified conditions in order. The first condition that is true will have its code block executed; if none of the conditions are true, the code block inside the else statement is executed.
num
.num
.num
is positive, negative, or zero.num
is positive, negative, or zero.let num = -5
if num > 0 {
print("\(num) is positive.")
} else if num < 0 {
print("\(num) is negative.")
} else {
print("\(num) is zero.")
}
-5 is negative.
marks
.marks
.marks
.let marks = 85
if marks >= 90 {
print("Grade: A")
} else if marks >= 80 {
print("Grade: B")
} else if marks >= 70 {
print("Grade: C")
} else if marks >= 60 {
print("Grade: D")
} else {
print("Grade: F")
}
Grade: B
temperature
.temperature
.temperature
.let temperature = 75.5
if temperature > 100 {
print("It's extremely hot.")
} else if temperature > 85 {
print("It's hot.")
} else if temperature > 60 {
print("It's warm.")
} else if temperature > 32 {
print("It's cold.")
} else {
print("It's freezing.")
}
It's warm.