//计算半径为5的圆的面积和周长并打印出来。(pi为3.14)面积pi*r*r,perimeter(周长)
int r = 5;
double pi = 3.14;
double area = pi * r * r;
double perimeter = pi * 2 * r;
Console.WriteLine("半径为{0}的圆的面积是{1}周长是{2}",r,area,perimeter);
Console.ReadKey();
//计算半径为5的圆的面积和周长并打印出来。(pi为3.14)面积pi*r*r,perimeter(周长)
int r = 5;
double pi = 3.14;
double area = pi * r * r;
double perimeter = pi * 2 * r;
Console.WriteLine("半径为{0}的圆的面积是{1}周长是{2}",r,area,perimeter);
Console.ReadKey();
本文标题:2018-12-19
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