208.cpp

来自「《C++ 实训教程》第二章练习题的全部源代码。」· C++ 代码 · 共 22 行

/*
	208.cpp
	Written By S.Y.Feng
	DEMO 演示inline Function(内联函数)的使用
*/
#include <iostream.h>
const float PI = 3.1415926;
inline float Area(const float r);  //内联函数
main()
{
   float radius;
   cout << "Enter the radius of a circle: ";
   cin >> radius;
   cout << "The Area is " << Area(radius) << "\n";
}
float Area(const float r)  //注意在函数定义的头部不要再加inline
{return PI * r * r;}
/*
Enter the radius of a circle: 10
The Area is 314.159

*/