golang-exercises/star-shapes/main.go

package main

// TODO: figure out colored text

import (
	"fmt"
)

func main() {
	var numStar int
	var numShape int

	// TODO: Add error handling for star number
	fmt.Println("How many stars do you want?")
	fmt.Printf("    Stars: ")
	fmt.Scan(&numStar)

	fmt.Printf("\n")

forShapes:
	for {
		fmt.Println("Which shape would you like?\n    Line [1]\n    Square [2]\n    Flag [3]")
		fmt.Printf("Shape: ")
		fmt.Scanln(&numShape)
		fmt.Printf("\n")
		switch numShape {
		case 1:
			line(numStar)
			break forShapes
		case 2:
			square(numStar)
			break forShapes
		case 3:
			flag(numStar)
			break forShapes
		default:
			fmt.Printf("\n[-] INVALID INPUT, please use either 1, 2 or 3.\n\n")
		}
	}
}

func line(num int) {
	for i := 0; i < num; i++ {
		fmt.Printf("* ")
	}
	fmt.Printf("\n")
}

func square(num int) {
	for i := 0; i < num; i++ {
		for i := 0; i < num; i++ {
			fmt.Printf("* ")
		}
		fmt.Printf("\n")
	}
}

func flag(num int) {
	for a := 0; a < num; a++ {
		for i := -1; i < a; i++ {
			fmt.Printf("* ")
		}
		fmt.Printf("\n")
	}
	for i := 0; i < num/2; i++ {
		println("*")
	}
}