Go Switch Statements

Code examples from Go Tutorial for Beginners #7 - Control Flow: switch

Contents

• basic_switch.go - Basic switch statements with multiple case values
• expressionless_switch.go - Switch without expression (like if-else chains)
• fallthrough.go - Using the fallthrough keyword
• type_switch.go - Type switches for interface types

Running the Examples

go run basic_switch.go
go run expressionless_switch.go
go run fallthrough.go
go run type_switch.go

Key Concepts

Basic Switch

switch day {
case "Monday", "Tuesday":
    fmt.Println("Weekday")
case "Saturday", "Sunday":
    fmt.Println("Weekend")
default:
    fmt.Println("Unknown")
}

Expressionless Switch (like if-else)

switch {
case score >= 90:
    fmt.Println("Grade: A")
case score >= 80:
    fmt.Println("Grade: B")
default:
    fmt.Println("Grade: F")
}

Fallthrough

switch num {
case 1:
    fmt.Println("One")
    fallthrough
case 2:
    fmt.Println("Two")
}

Type Switch

switch v := i.(type) {
case int:
    fmt.Println("Integer:", v)
case string:
    fmt.Println("String:", v)
default:
    fmt.Printf("Unknown: %T\n", v)
}

Watch the Tutorial

Go Tutorial for Beginners #7 - Control Flow: switch

License

MIT