编写函数double rect-area(double length,double width=0),

学习时间:2026-08-25 00:08:48 阅读：5604

编写函数double rect-area(double length,double width=0),编写函数double rect-area(double length,double width=0)：当width=0时计算正方形面积,否则计算长方形面积

乐观的飞鸟

2026-08-25 00:08:48



double rect_area(double length,double width=0){if(width==0。0) width=length;return length*width;}