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).
   // Creating String Objects (P.405)
   #include <iostream>
   #include <string>
   using std::cout;
   using std::endl;
   using std::string;
   
   int main()
   {
       int a = 65;
       string b(a, a);
       cout << 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).
   
   // The Size of a Vector (P.495)
   #include <iostream>
   #include <string>
   #include <vector>
   using std::cout;
   using std::endl;
   using std::string;
   using std::vector;
   int main()
   {
      vector<string> a;    // a string vector
      int b = 6;
      int c = 3;
      cout << a.size() << endl;
      a.push_back(b);
      a.push_back(c);
      cout << a.size() << 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).
   
   // Creating Vector Containers (P.492)
   #include <iostream>
   #include <vector>
   using std::cout;
   using std::endl;
   using std::vector;
   
   int main()
   {
       int i;
       // an integer array
       int a[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
       // an integer vector       
       vector<int> c( a+2, a+7 );  
       // Reverse iterator (P.494)              
       vector<int> d( c.rbegin(), c.rend() );
   
       for (i=0; i<c.size(); i++)
          cout << c.at(i);
       cout << endl;
   
       for (i=0; i<d.size(); i++)
          cout << d.at(i);
       cout << endl;
       return 0;
   }