國立暨南國際大學 97 學年度第一學期小考試卷

(考試時間: 15:10-15:30)

1. (10%) Determine whether the following code has syntax erros or not.  If it is correct, predict its output.  If it is incorrect, point out the mistake(s).

   #include <iostream>
   using std::cout;
   
   class CStack
   {
   public:
           CStack()        // Default Constructor
           {
                   index = 0;
           }
           void push(int i)
           {
                   a[index++] = i;
           }
           int pop()
           {
                   return a[--index];
           }
   private:
           #define         StackSize       10
           int a[StackSize];
           int index;
   };
   
   int main() {
     CStack stack1;
     stack1.push(3); stack1.push(8);
     CStack stack2 = stack1;
     stack2.pop();
     cout << stack2.pop() << "\n";
   }
   
   
   
   
   
   
   

2. (10%) Determine whether the following code has syntax erros or not.  If it is correct, predict its output.  If it is incorrect, point out the mistake(s).
   
   // Ex7_09a.cpp
   // Initializing an object with an object of the same class
   #include <iostream>
   using std::cout;
   using std::endl;
   
   class CBox                             // Class definition at global scope
   {
     public:
   
       // Constructor definition
       CBox(double lv = 1.0, double bv = 1.0, double hv = 1.0)
       {
         cout << endl << "Constructor called.";
         m_Length = lv;                   // Set values of
         m_Width = bv;                    // data members
         m_Height = hv;
       }
   
       // Implementing a Copy Constructor
       CBox(CBox& initB)
       {
           m_Length = initB.m_Length;
           m_Width = initB.m_Width;
           m_Height = initB.m_Height = 1.0;
       }
   
       // Function to calculate the volume of a box
       double Volume()
       {
         return m_Length*m_Width*m_Height;
       }
   
     private:
       double m_Length;                   // Length of a box in inches
       double m_Width;                    // Width of a box in inches
       double m_Height;                   // Height of a box in inches
   };
   
   int main()
   {
      CBox box1(78.0, 24.0, 18.0);
      CBox box2 = box1;                   // Initialize box2 with box1
   
      cout << endl
           << "box1 volume = " << box1.Volume()
           << endl
           << "box2 volume = " << box2.Volume();
   
      cout << endl;
      return 0;
   }