include <stdio. h> 例 Enter radius and height: 3.0 10 int main( void) Vo|ume=282743 double height, radius, volume double cylinder( double r, double h);/函数声明 printf ("Enter radius and height: scanf(%lf%If ,&radius, &height) vo|ume= cylinder(radius, height);问题: prn("oume=%3m", volume)}函数是如何运行的? return o double cylinder(double r, double h) double result. result =3, 1415926*r*r* h: return result#include <stdio.h> int main( void ) 例5-1源程序 { double height, radius, volume; double cylinder (double r, double h); /* 函数声明*/ printf ("Enter radius and height: "); scanf ("%lf%lf", &radius, &height); volume = cylinder (radius, height ); printf ("Volume = %.3f\n", volume); return 0; } double cylinder (double r, double h) { double result; result =3.1415926 * r * r * h; return result; } Enter radius and height: 3.0 10 Volume = 282.743 问题： 函数是如何运行的？