package ch02; public class java算数运算符 { public static void main(String[] args) { int a = 22; int b = 20; b++; // 10+20+1,先加加再赋值 System.out.println(a+b++); // -x指取它的相反数 System.out.println(-b); // 三目表达式 System.out.println(a>b?a:b); //关系运算符 if (a>b){ System.out.println(a+"大于"+b); }else if (a<b){ System.out.println(a+"小于"+b); }else { System.out.println(a+"等于"+b); } int c = 10; if(a>b || a!=30){ a=c; } System.out.println(c); } }