國立暨南國際大學 102 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).
   // Pass-by-Pointer
   #include <iostream>
   
   void swap(int &i, int &j)
   {
       int temp;
       temp = i;
       i = j;
       j = temp;
       return;
   }
   
   int main()
   {
       int a = 4;
       int b = 8;
       std::cout << a << b << std::endl;
       swap(&a, &b);
       std::cout << a << b << 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).
   
   // Recursive Function
   #include <iostream>
   
   void f(int i)
   {
       if (i >= 7)
           f( i / 7 );
       std::cout << i % 7;
       return;
   }
   
   int main()
   {
       f(50);
       std::cout << std::endl;
       return 0;
   }