java算术运算符 自增自减，取模运算的程序_编写一个java程序,在程序中进行求模运算、自增和自减运算,再输出这些结果。

程序：

/*
测试算术运算，取模、自增自减运算
 */

public class Test_operator {
    public static void main(String[] args) {
        byte a = 3;
        int b = 14;
        //short c = a+b;报错
        int d = a+b;

        float e = 3.15f;
        double f = 6.28;
        //int g = f+e;报错
        // float h = e+f;报错
        double g = e+f;

    /*
    取余数
     */
        System.out.println(-9%5);
        /*
        自增自减
        *
        * */

        int x1 = 4;
        int y1 = x1++;
        System.out.println("x1="+x1+'\n'+"y1="+y1);

        int x2 = 4;
        int y2 = ++x2;
        System.out.println("x2="+x2+'\n'+"y2="+y2);
    }


}
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