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

学习时间:2026-03-30 07:26:51 阅读：3708

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

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2026-03-30 07:26:51

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