go:make_board: Changed playermovex and y to just playerx and y; added error handling for negative numbers

go/make_board/main.go

@@ -1,28 +1,40 @@
 package main
 
 import (
+	"errors"
 	"fmt"
+	"log"
 )
 
 func main() {
 	const boardY int = 7
 	const boardX int = 12
 
-	board := makeBoard(boardY, boardX, "_")
+	board, err := makeBoard(boardY, boardX, "_")
+
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	// Pretend that the player did something in the middle
-	playerMoveY := boardY / 2
-	playerMoveX := boardX / 2
+	playerY := boardY / 2
+	playerX := boardX / 2
 
-	board[playerMoveY][playerMoveX] = "@"
+	board[playerY][playerX] = "@"
 
 	printBoard(board)
 
 }
 
-func makeBoard(sizeY, sizeX int, symbol string) [][]string {
+func makeBoard(sizeY, sizeX int, symbol string) ([][]string, error) {
 	//Make an array of empty strings
 	// Rows
+
+	if sizeY < 1 || sizeX < 1 {
+		err := errors.New("Board 'x' and 'y' values must both be greater than 1!")
+		return nil, err
+	}
+
 	board := make([][]string, sizeY)
 
 	for y := 0; y < sizeY; y++ {
@@ -34,7 +46,7 @@ func makeBoard(sizeY, sizeX int, symbol string) [][]string {
 			board[y][x] = symbol
 		}
 	}
-	return board
+	return board, nil
 }
 
 func printBoard(board [][]string) {