國立暨南國際大學 103 學年度第二學期小考試卷

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).
   
   // Increment Operator (P.59)
   #include <iostream>
   using std::cout;
   using std::endl;
   
   int main()
   {
       int a = 20;
       int b = 15;
       cout << a-- - --b << 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).
   
   // Shorthand notation (P.58)
   #include <iostream>
   using std::cout;
   using std::endl;
   
   int main()
   {
       int a = 144;
       int b =  12;
       int c =   6;
       a /= b + c;
       cout << a << endl;
       return 0;
   }
   
   
3. (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).
   
   // Type Conversion (P.63)
   #include <iostream>
   using std::cout;
   using std::endl;
   
   int main()
   {
       float R = 2.0;
       cout << 3 / 2 * R * R << endl;
       cout << R * R * 3 / 2 << endl;
       return 0;
   }