國立暨南國際大學 102 學年度第二學期小考試卷

1. (10%) What would the following code show on the screen?
   
   // Ncurses Library
   #include <curses.h>
   
   int main()
   {
       const int HEIGHT = 3;
       int y;
   
       initscr();
       for (y=0; y<=HEIGHT; y++)
       {
           move(y, y); addch('*');
           move(y, 2*HEIGHT - y); addch('*');
       }
       refresh();
       endwin();
       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).
   
   // switch (P.135)
   #include <iostream>
   
   int main()
   {
       int i(0), a(0), b(0);
       for (i=1; i<=6; i++)
           switch(i % 2)
           {
               case 0:
                   a += 2;
                   break;
               case 1:
                   b++;
                   break;
           }
   
       std::cout << a << b << std::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).
   
   // continue (P.146) vs. break (P.136)
   #include <iostream>
   using std::cout;
   using std::endl;
   
   int main()
   {
       int i, j, k, m;
       m=0;
       for (i=1; i<6; i++)
       {
           if (i==3)
               continue;
           cout << i << endl;
       }
       cout << "After the loop, i = " << i << endl;
       return 0;
   }