第49題

Place code framgmets into position so the output is: The quantity is 420

答案：

public int update(int quantity, int adjust){
quantity = quantity + adjust;
return quantity;
}
public void callUpdate(){
int quant = 100;
quant = update(quant, 320);
System.out.println("The quantity is " + quant);
}

參考：6-2 Java 方法