In this tutorial, we will learn about if-else statements in Go. We will cover the basics of conditional execution using if-else statements.
An if-else statement is a conditional statement that executes one block of code if a specified condition is true, and another block of code if the condition is false.
The syntax for the if-else statement in Go is:
if condition {
// Code block to execute if condition is true
} else {
// Code block to execute if condition is false
}
The if-else statement evaluates the specified condition. If the condition is true, the code block inside the if statement is executed; otherwise, the code block inside the else statement is executed.
num
.num
.num
is even or odd.num
is even or odd.package main
import "fmt"
func main() {
num := 10
if num % 2 == 0 {
fmt.Printf("%d is even.", num)
} else {
fmt.Printf("%d is odd.", num)
}
}
10 is even.
str
.str
.str
starts with a specific value.package main
import "fmt"
func main() {
str := "Hello, world!"
if str[:5] == "Hello" {
fmt.Println("String starts with 'Hello'.")
} else {
fmt.Println("String does not start with 'Hello'.")
}
}
String starts with 'Hello'.
num
.num
.num
is positive or negative.num
is positive or negative.package main
import "fmt"
func main() {
num := -5
if num > 0 {
fmt.Printf("%d is positive.", num)
} else {
fmt.Printf("%d is negative or zero.", num)
}
}
-5 is negative or zero.