复合运算符
来自ALSROBOT WiKi
自加++ i++; //相当于 i = i + 1; 自减-- i--; //相当于 i = i - 1; 复合加+= i+=5; //相当于 i = i + 5; 复合减-= i-=5; //相当于 i = i - 5; 复合乘*= i*=5; //相当于 i = i * 5; 复合除/= i/=5; //相当于 i = i / 5; 复合与&= i&=5; //相当于 i = i & 5; 复合或|= i|=5; //相当于 i = i | 5;