🧠 به برگه مرجع عملکرد بروید

func functionName(parameters) returnType {
    // function body
}

func greet(name string) string {
    return "Hello, " + name
}

message := greet("Alice")
fmt.Println(message) // Output: Hello, Alice

func add(a int, b int) int {
    return a + b
}

func add(a, b int) int {
    return a + b
}

func divide(dividend, divisor float64) (float64, string) {
    if divisor == 0 {
        return 0, "Error: Division by zero"
    }
    return dividend / divisor, "Success"
}

result, status := divide(10, 2)

func getFullName() (firstName, lastName string) {
    firstName = "John"
    lastName = "Doe"
    return // implicit return
}

func sum(nums ...int) int {
    total := 0
    for _, num := range nums {
        total += num
    }
    return total
}

sum := sum(1, 2, 3, 4, 5) // Output: 15

func() {
    fmt.Println("I am anonymous")
}()

greet := func(name string) string {
    return "Hello, " + name
}
fmt.Println(greet("Bob"))

func counter() func() int {
    count := 0
    return func() int {
        count++
        return count
    }
}

next := counter()
fmt.Println(next()) // 1
fmt.Println(next()) // 2

func process(name string, f func(string) string) string {
    return f(name)
}

func shout(s string) string {
    return strings.ToUpper(s)
}

result := process("hello", shout)

var globalVar = "I’m global"

func example() {
    localVar := "I’m local"
    fmt.Println(globalVar, localVar)
}

func login(user string) string {
    if user == "" {
        return "No user provided"
    }
    return "Welcome " + user
}

func factorial(n int) int {
    if n == 0 {
        return 1
    }
    return n * factorial(n-1)
}