#include<stdio.h>Enter radius and height: 3.0 10int main( void )Volume = 282.743.double height, radius, volume;doublecylinder(doubler,doubleh);/*函数声明*printf ("Enter radius and height: ");scanf ("%lf%lf",&radius,&height)volume=cylinder(radius,height);问题：printf ("Volume = %.3fin", 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;7#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？