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July 27, 2014 00:27
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,132 @@ package main import ( "bufio" "fmt" "os" "strings" ) func main() { fmt.Print(`Which example do you want to run? 1) fmt.Scan(...) 2) bufio.Reader.ReadString(...) 3) bufio.Reader.ReadByte(...) 4) bufio.Reader.ReadRune() Please enter 1..5 and press ENTER: `) reader := bufio.NewReader(os.Stdin) result, _, err := reader.ReadRune() if err != nil { fmt.Println(err) return } switch result { case '1': runScan() break case '2': runReadString() break case '3': runReadByte() break case '4': runReadRune() break default: return } } func runScan() { // you must declare your var, and pass the pointer into Scan() below var input string fmt.Print("\nEnter some text and press enter: ") // using fmt.Scan, we can read single words in ascii string num, err := fmt.Scan(&input) if err != nil { fmt.Println(err) return } fmt.Println(input) fmt.Println(num) } // if using ReadString() a lot, consider using constants const inputdelimiter = '\n' func runReadString() { fmt.Print("\nEnter your Full Name: ") reader := bufio.NewReader(os.Stdin) input, err := reader.ReadString(inputdelimiter) if err != nil { fmt.Println(err) return } // convert CRLF to LF input = strings.Replace(input, "\n", "", -1) fmt.Println(input) fmt.Println("Exiting program.") } func runReadByte() { fmt.Print("\nContinue? [Y/N] ") reader := bufio.NewReader(os.Stdin) c, err := reader.ReadByte() if err != nil { fmt.Println(err) return } fmt.Printf("You entered: %q\n", c) if c == []byte("Y")[0] || c == []byte("y")[0] { fmt.Println("Thank you for pressing Y to continue!") } else { fmt.Println("No? Ok, we'll exit.") } } func runReadRune() { fmt.Print("\nContinue? [Y/N] ") reader := bufio.NewReader(os.Stdin) c, num, err := reader.ReadRune() if err != nil { fmt.Println(err) return } fmt.Printf("You entered: %q\n", c) fmt.Println("The size entered: ", num) if c == 'y' || c == 'Y' { fmt.Println("Thank you for pressing Y to continue!") } else { fmt.Println("No? Ok, we'll exit.") } }