國立暨南國際大學 101 學年度第一學期小考試卷

1. (10%) Determine whether the following code is correct or not.  If it is correct, predict its output.  If it is incorrect, point out the mistake(s).
   
   // Definition of a struct to represent rectangles
   #include <iostream>
   
   struct RECTANGLE
   {
     int Left;                            // Top-left point
     int Top;                             // coordinate pair
   
     int Right;                           // Bottom-right point
     int Bottom;                          // coordinate pair
   }
   
   long Area(const RECTANGLE aRect)       // Pass by value
   { return (aRect.Right - aRect.Left)*(aRect.Bottom - aRect.Top); }
   
   int main()
   {
       RECTANGLE Hut = { 10, 20, 30, 40 };
       std::cout << Area(Hut) << std::endl;
       return 0;
   }
   
   
   
2. (10%) Determine whether the following code is correct or not.  If it is correct, predict its output.  If it is incorrect, point out the mistake(s).
   
   // Rational Numbers
   #include <iostream>
   
   struct Rational
   {
     unsigned char numerator;
     unsigned char denominator;
   };
   
   int main()
   {
       Rational p = {1, 3}, q = {5, 7};
       std::cout << sizeof(p) << '\t'
           << sizeof(q.denominator) << std::endl;
       return 0;
   }