java - 除以零简单程序

Question

 public static void main(String [] args) {

 Scanner userInput = new Scanner(System.in);

 int myCents = 0;
 int myDollars = 0;
 int myQuarters = 0;
 int myDimes = 0;
 int myNickels = 0;
 int myPennies = 0;

 System.out.printf("Please enter the amount of cents below: \n");
 myCents = userInput.nextInt();

 myDollars = myCents/100;
 myQuarters = myCents % myDollars;
 myDimes = myCents % myQuarters;
 myNickels = myCents % myDimes;
 myPennies = myCents % myNickels;

 System.out.printf(myCents + " is equal to %4d", myDollars);
 System.out.printf(" dollar(s), " + myQuarters);
 System.out.printf(" quarter(s), " + myDimes);
 System.out.printf(" dime(s), " + myNickels);
 System.out.printf(" nickel(s) and " + myPennies + " pennies. \n");
}
}
Error:  java.lang.ArithmeticException: / by zero

错误似乎不断出现。到目前为止我们还没有学习 Java 的 if 语句。它应该是一个简单的程序。

Answer 1

myCents/100是整数除法，所以如果 myCents < 100 , myDollars将是 0。 着火 % myDollars会扔你的/ by zero异常。

尝试:

myDollars = myCents / 100;
myCents = myCents % 100;
myQuarters = myCents / 25;
myCents = myCents%25;

等等。 (假设 25 美分是 25 美分...我从未使用过美元)