國立暨南國際大學 96 學年度第一學期小考試卷

(考試時間: 13:10-13:20)

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).
   

   #include <iostream>
   using std::cout;
   using std::endl;
   void swap(int, int);
   
   int main()
   {
   	int a=10, b=20;
   	swap(a, b);
   	cout << a << "\t" << b << endl;
   }
   
   void swap(int x, int y)
   {
   	int temp;
   	temp = x; 
   	x = y; 
   	y = temp;
   	cout << x << "\t" << y << endl;
   }

   
   
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).

   #include <iostream>
   using std::cout;
   using std::endl;
   void cycle(int*, int*, int*);
   
   int main()
   {
   	int a=10, b=20, c=30;
   	cycle(&a, &b, &c);
   	cout << a << "\t" << b << "\t" << c << endl;
   }
   
   void cycle(int* x, int* y, int* z)
   {
   	int temp;
   	temp = *x; 
   	*x = *y; 
   	*y = *z;
   	*z = temp;
   	cout << *x << "\t" << *y << "\t" << *z << endl;
   }