國立暨南國際大學 99 學年度第一學期小考試卷

Open book; turn off computer & mobile phone                    (考試時間: 16:30-16:45)

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;
   using std::endl;
   
   long product(long a, long b)
   { return a*b; }
   
   long sum(long a, long b)
   { return a+b; }
   
   int main(void)
   {
           long (*pdo_it) (long, long);
   
           pdo_it = product;
           cout << pdo_it(3,5) << endl;
           pdo_it = sum;
           cout << pdo_it(product(5,pdo_it(4,3)),6) << endl;
           return 0;
   }
   

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).
   #include <iostream>
   using std::cout;
   
   int sum(int arg1 = 10, int arg2 = 20, int arg3 = 30, int arg4 = 40);
   
   int main()
   {
           cout << sum(5, 5) << "\n";
           return 0;
   }
   
   int sum(int arg1, int arg2, int arg3, int arg4)
   {
           return arg1 + arg2 + arg3 + arg4;
   }