package Calculator;
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
double answer;
System.out.println("Enter your operation: ");
String input = s.nextLine();
char[] inputArray = input.toCharArray();
double fstNum = inputArray[0];
double sndNum = inputArray[4];
char op = inputArray[2];
switch (op) {
case '+': answer = fstNum + sndNum;
System.out.println("The answer is: " + answer);
break;
case '-': answer = fstNum - sndNum;
System.out.println("The answer is: " + answer);
break;
case '*': answer = fstNum * sndNum;
System.out.println("The answer is: " + answer);
break;
case '/': answer = fstNum/sndNum;
System.out.println("The answer is: " + answer);
break;
}
}
}
所以我写了这个简单的计算器,它工作得很好,除了我从除了减法以外的任何事情的答案都离开了。例如。 5 * 2 = 2650.0。我很新的节目,所以如果我犯了一个很基本的错误,请不要打坏了我:)加法/乘法/除法在Java中
提示的例子:字符“1”,不具有数值1 。http://unicode-table.com –
...如果我输入“1 + 1”或“10 + 10”,会发生什么? ;-) – haraldK
char num1Char = inputArray [0]; char num2Char = inputArray [4]; \t \t double num1Double = num1Char; double num2Double = num2Char; 这仍然关闭 –