/*ch4_6*/
/*已知圓柱體的底半徑為radius，高為high，求此圓柱體的體積*/
#include<stdio.h>
main()
{
    float radius,high,vol,pi=3.14;
    printf("Please input radius & high: ");	/*提示從鍵盤上輸入底半徑和高*/
    scanf("%f %f",&radius,&high);	        	/*從鍵盤輸入兩個實數賦給變量*/
    vol=pi*radius*radius*high;
    printf("radius=%7.2f, high=%7.2f, vol=%7.2f\n",radius,high,vol);
}