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Question

I have a menu option with two options: add and substract. When I choose one it runs ok but the program closes. I would like to know how to make it go back to the menu after an operation ends to select another one

package main

import (
    "fmt"
)

func main() {
    var n1, n2, s, r float64
    var op, ns int

    fmt.Println("
\tWelcome")
    fmt.Println("Chose an option")
    fmt.Println("1.-Add")
    fmt.Println("2.-Substract")
    fmt.Scan(&op)

    if op == 1 {

        fmt.Printf("
\tAdd")
        fmt.Printf("
How many numbers you add? ")
        fmt.Scan(&ns)
        if ns <= 1 {
            fmt.Print("You can not add just a number")

        } else {
            for i := 0; i < ns; i++ {
                fmt.Printf("
Type the number %d: ", i+1)
                fmt.Scan(&n1)
                s += n1
            }

            fmt.Println("
The sum is: ", s)
            //How to return to the menu?
        }

    } else if op == 2 {
        fmt.Printf("
\tSubtraction")
        fmt.Printf("
Type the first number: ")
        fmt.Scan(&n1)
        fmt.Printf("
Type the second number: ")
        fmt.Scan(&n2)
        r = n1 - n2
        fmt.Println("
Substraction is: ", r)
    }
}

Answer 1

Just wrap the whole thing in

for {

}

Use break to exit the loop or continue to go back to the top.