基於Java中的另一個int更改int

Question

最近我試圖自動化JavaScript的編碼，當我遇到一些我的變量的問題。

Scanner scan = new Scanner(System.in); 
System.out.print("Enter x start coordinate: "); 
int xCoord = scan.nextInt(); 
System.out.print("Enter y start coordinate: "); 
int yCoord = scan.nextInt(); 
String more = "y"; 
int num1 = 0 + xCoord; 
int num2 = 5 + yCoord; 
int num3 = 13 + xCoord; 
int num4 = 10 + yCoord; 
System.out.println("ctx.moveTo(" + num1 + "," + num2 + ");" 
     + "\nctx.lineTo(" + num3 + "," + num4 + ")\n" 
     + "Mid Point: " + num3 + "," + num4); 
System.out.print("Again?: "); 
more = scan.next(); 
while (more.equals("y")) 
{ 
    System.out.println("Enter a direction (above, left, right): "); 
    String nextDir = scan.next(); 
    if (nextCube.equals("right")) 
    { 
     xCoord += 13; 
     yCoord += 5; 
    } 
    else if (nextDir.equals("left")) 
    { 
     xCoord -= 13; 
     yCoord += 5; 
    } 
    else if (nextDir.equals("above")) 
    { 
     yCoord -= 18; 
    } 
    System.out.println("ctx.moveTo(" + num1 + "," + num2 + ");" 
     + "\nctx.lineTo(" + num3 + "," + num4 + ")\n" 
     + "Mid Point: " + num3 + "," + num4); 
    System.out.print("Again?: "); 
    more = scan.next(); 
} 

我發現，要求朝的XCOORD和YCOORD變量的變化移動方向，但「民」的變量並沒有隨着新的值更新後。我知道在我的思維過程中一定有什麼問題會影響Java中依賴變量的工作方式，但我不知道是什麼。請幫助！

Answer 1

也許你需要在循環更新「NUM」變量，如：

while (more.equals("y")) 
{ 
    ... 

    // Add below codes 
    num1 = 0 + xCoord; 
    num2 = 5 + yCoord; 
    num3 = 13 + xCoord; 
    num4 = 10 + yCoord; 

    System.out.println("ctx.moveTo(" + num1 + "," + num2 + ");" 
     + "\nctx.lineTo(" + num3 + "," + num4 + ")\n" 
     + "Mid Point: " + num3 + "," + num4); 
    System.out.print("Again?: "); 
    more = scan.next(); 
}