Hello World in Go

package mainimport "fmt"func main() {    fmt.Println("Hello, World!")}

package mainimport "fmt"func main() {    name := "Gopher"    age  := 10    fmt.Printf("Name: %s, Age: %d\n", name, age)}

package mainfunc main() {    message := greet("Gopher")    println(message)}

package mainimport (    "fmt"    "os")func main() {    if len(os.Args) < 2 {        fmt.Println("Usage: ./main <name>")        os.Exit(1)    }    fmt.Printf("Hello, %s!\n", os.Args[1])}

package mainimport (    "bufio"    "fmt"    "os")func main() {    scanner := bufio.NewScanner(os.Stdin)    fmt.Print("Enter your name: ")    scanner.Scan()    name := scanner.Text()    fmt.Printf("Hello, %s!\n", name)}

package mainimport (    "bufio"    "fmt"    "os")func main() {    scanner := bufio.NewScanner(os.Stdin)    fmt.Print("Enter first number: ")    scanner.Scan()    a := scanner.Text()    fmt.Print("Enter second number: ")    scanner.Scan()    b := scanner.Text()    fmt.Printf("You entered: %s and %s\n", a, b)}

package mainimport (    "fmt"    "os")func main() {    f, _ := os.Create("output.txt")    f.WriteString("Hello from Go!\n")    f.Close()    fmt.Println("File written.")}