englarea.cpp

本课程主要介绍面向对象程序设计的方法和c++语言的基本概念。以c++语言中的面向对象机制为主。学习者在学习过程中可以通过大量的程序实例和相关练习

// englarea.cpp
// demonstrates nested structures
#include <iostream>
using namespace std;
////////////////////////////////////////////////////////////////
struct Distance                  //English distance
   {
   int feet;
   float inches;
   };
////////////////////////////////////////////////////////////////
struct Room                      //rectangular area
   {
   Distance length;              //length of rectangle
   Distance width;               //width of rectangle
   };
////////////////////////////////////////////////////////////////
int main()
   {
   Room dining;                  //define a room

   dining.length.feet = 13;      //assign values to room
   dining.length.inches = 6.5;
   dining.width.feet = 10;
   dining.width.inches = 0.0;
                                 //convert length & width
   float l = dining.length.feet + dining.length.inches/12;
   float w = dining.width.feet  + dining.width.inches/12;
                                 //find area and display it
   cout << "Dining room area is " << l * w
        << " square feet\n" ;
   return 0;
   }