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  • 简单计算器

    public class Cal {

     

        /**

         * @param args

         */

        public static void main(String[] args) {

            // TODO Auto-generated method stub

            Scanner i = new Scanner(System.in);

            System.out.println("输入一个数");

            int a = i.nextInt();

            System.out.println("输入二个数");

            int b = i.nextInt();

            System.out.println("输入运算符");

            String s = i.next();

     

            if (s.equals("+")) {

                int sum;

                sum = a + b;

                System.out.println(sum);

            } else if (s.equals("-")) {

                int sum;

                if (a < b) {

                    sum = b - a;

                    System.out.println(sum);

                } else if (a > b) {

                    sum = a - b;

                    System.out.println(sum);

                }

            } else if (s.equals("*")) {

                int sum;

                sum = a * b;

                System.out.println(sum);

            } else if (s.equals("/")) {

                if (a < b) {

                    int sum;

                    sum = b / a;

                       if(a==0){

                      System.out.println(“除数需不为0”);

                     }

                    System.out.println(sum);

                } else if (a > b) {

                    int sum = a / b;

                    System.out.println(sum);

     

                }

            }

     

        }

    }

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  • 原文地址:https://www.cnblogs.com/xiaoqingtest/p/5313797.html
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