Added go version of Dice

00_Alternate_Languages/33_Dice/go/main.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"math/rand"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func printWelcome() {
+	fmt.Println("\n                   Dice")
+	fmt.Println("Creative Computing  Morristown, New Jersey")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("This program simulates the rolling of a")
+	fmt.Println("pair of dice.")
+	fmt.Println("You enter the number of times you want the computer to")
+	fmt.Println("'roll' the dice.   Watch out, very large numbers take")
+	fmt.Println("a long time.  In particular, numbers over 5000.")
+	fmt.Println()
+}
+
+func main() {
+	printWelcome()
+	scanner := bufio.NewScanner(os.Stdin)
+
+	for {
+		fmt.Println("\nHow many rolls? ")
+		scanner.Scan()
+		numRolls, err := strconv.Atoi(scanner.Text())
+		if err != nil {
+			fmt.Println("Invalid input, try again...")
+			continue
+		}
+
+		// We'll track counts of roll outcomes in a 13-element list.
+		// The first two indices (0 & 1) are ignored, leaving just
+		// the indices that match the roll values (2 through 12).
+		results := make([]int, 13)
+
+		for n := 0; n < numRolls; n++ {
+			d1 := rand.Intn(6) + 1
+			d2 := rand.Intn(6) + 1
+			results[d1+d2] += 1
+		}
+
+		// Display final results
+		fmt.Println("\nTotal Spots   Number of Times")
+		for i := 2; i < 13; i++ {
+			fmt.Printf(" %-14d%d\n", i, results[i])
+		}
+
+		fmt.Println("\nTry again? ")
+		scanner.Scan()
+		if strings.ToUpper(scanner.Text()) == "Y" {
+			continue
+		} else {
+			os.Exit(1)
+		}
+
+	}
+}