In order to calculate the circumference and area of the graph more conveniently, I designed a calculator to realize the perimeter and area of the figure. This calculator can calculate the perimeter and area of a circle, rectangle, triangle. If the user input the radius of the circle or the length and width of the rectangle or the three sides of the triangle, the system judges whether the user input is correct, if not correct, gives the prompt; if correct, the system accounting calculates the corresponding perimeter and the area, and displays on the screen feedback to the user.

Filename	Size	Update
图形的周长和面积计算器C_.doc	278016	2017-11-27

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