求编程,从键盘输入圆的半径,求该圆的周长和面积 下面是我做的,#includevoid main (){float pi=3.14;int s,l,r;scanf("%d \ n ",& r);s=pi*r*r;l=2*pi*r;printf(%d%d\n",l,s);}
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![求编程,从键盘输入圆的半径,求该圆的周长和面积 下面是我做的,#includevoid main (){float pi=3.14;int s,l,r;scanf(](/uploads/image/z/3967319-47-9.jpg?t=%E6%B1%82%E7%BC%96%E7%A8%8B%2C%E4%BB%8E%E9%94%AE%E7%9B%98%E8%BE%93%E5%85%A5%E5%9C%86%E7%9A%84%E5%8D%8A%E5%BE%84%2C%E6%B1%82%E8%AF%A5%E5%9C%86%E7%9A%84%E5%91%A8%E9%95%BF%E5%92%8C%E9%9D%A2%E7%A7%AF+%E4%B8%8B%E9%9D%A2%E6%98%AF%E6%88%91%E5%81%9A%E7%9A%84%2C%23includevoid+main+%28%29%7Bfloat+pi%3D3.14%3Bint+s%2Cl%2Cr%3Bscanf%28%22%25d+%5C+n+%22%2C%26+r%29%3Bs%3Dpi%2Ar%2Ar%3Bl%3D2%2Api%2Ar%3Bprintf%28%25d%25d%5Cn%22%2Cl%2Cs%29%3B%7D)
求编程,从键盘输入圆的半径,求该圆的周长和面积 下面是我做的,#includevoid main (){float pi=3.14;int s,l,r;scanf("%d \ n ",& r);s=pi*r*r;l=2*pi*r;printf(%d%d\n",l,s);}
求编程,从键盘输入圆的半径,求该圆的周长和面积 下面是我做的,
#include
void main ()
{
float pi=3.14;
int s,l,r;
scanf("%d \ n ",& r);
s=pi*r*r;
l=2*pi*r;
printf(%d%d\n",l,s);
}
求编程,从键盘输入圆的半径,求该圆的周长和面积 下面是我做的,#includevoid main (){float pi=3.14;int s,l,r;scanf("%d \ n ",& r);s=pi*r*r;l=2*pi*r;printf(%d%d\n",l,s);}
r、s和l变量建议定义成float或double类型,另外出于养成良好的习惯,最好是将π定义成常量const
输入建议scanf("%f \ n ",& r);
输出建议使用printf(%f\n%f\n",l,s);
不然的话,只能计算整数,功能不强,精度太低