Go User Input

In Go, you can read user input from the console using various methods depending on the type of input you expect. Here are a few examples:

1. Reading a single line of text input:

package main

import (
    "bufio"
    "fmt"
    "os"
)

func main() {
    reader := bufio.NewReader(os.Stdin)

    fmt.Print("Enter your name: ")
    name, _ := reader.ReadString('\n')

    fmt.Printf("Hello, %s!\n", name)
}

2. Reading an integer:

package main

import (
    "fmt"
    "os"
)

func main() {
    var age int

    fmt.Print("Enter your age: ")
    _, err := fmt.Scanln(&age)
    if err != nil {
        fmt.Println("Invalid input for age.")
        return
    }

    fmt.Printf("You are %d years old.\n", age)
}

3. Reading a floating-point number:

package main

import (
    "fmt"
    "os"
)

func main() {
    var weight float64

    fmt.Print("Enter your weight (in kg): ")
    _, err := fmt.Scanln(&weight)
    if err != nil {
        fmt.Println("Invalid input for weight.")
        return
    }

    fmt.Printf("Your weight is %.2f kg.\n", weight)
}

4. Reading multiple values on a single line:

package main

import (
    "fmt"
    "os"
)

func main() {
    var name string
    var age int

    fmt.Print("Enter your name and age: ")
    _, err := fmt.Scanln(&name, &age)
    if err != nil {
        fmt.Println("Invalid input.")
        return
    }

    fmt.Printf("Hello, %s! You are %d years old.\n", name, age)
}

In each example, we prompt the user to enter specific information and then use different methods (bufio.NewReader() with ReadString(), fmt.Scanln(), or fmt.Scan()) to read the input from os.Stdin (standard input).

Note that the error handling code (if err != nil) is used to check for any input errors and handle them appropriately.

Feel free to modify these examples based on your specific input requirements.