用C语言编程计算圆环面积

#include

#include

#include

#define

PI

3.1415926

int

main()

{

float

area

float

R,r

printf("请分别输入大圆和小圆的半径闹谨：")

scanf("%f,%f",&R,&r)

area=PI*R*R-PI*r*r

printf("圆环肢弯差面积为：历皮%f",area)

return

0

}

#include<stdio.h>

#define PI 3.14

int main()

{

float r1,r2,h

scanf("%f%f%f",&r1,&r2,&h)

printf("圆环体积仔裤=%f\n",PI*(r2-r1)*h)

printf("圆环升戚伍表面积吵或=%f\n",2*PI*(r1+r2)*h)

return 0

}

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