Question

Please provide the example with syntax of Switch statement in Golang

Answer 1

Switch is another conditional statement. Switch statements evaluate an expression and the result is compared against a set of available values(cases). Once a match is found the statements associated with that match(case) is executed. If no match is found nothing will be executed. You can also add a default case to switch which will be executed if no other matches are found. The syntax of the switch is

switch expression {
    case value_1:
        statements_1
    case value_2:
        statements_2
    case value_n:
        statements_n
    default:
        statements_default
    }

Here the value of the expression is compared against the values in each case. Once a match is found the statements associated with that case is executed. If no match is found the statements under the default section is executed.

Execute the below program

package main
import "fmt"

func main() {  
    a,b := 2,1
    switch a+b {
    case 1:
        fmt.Println("Sum is 1")
    case 2:
        fmt.Println("Sum is 2")
    case 3:
        fmt.Println("Sum is 3")
    default:
        fmt.Println("Printing default")
    }
}

You will get the output as

Sum is 3