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).
   // String Objects (P.405)
   #include <iostream>
   #include <string>
   using std::string;
   
   int main()
   {
       int m = 5;
       string n(m, 'n');
       std::cout << n << 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).
   
   // Modifying Strings (P.410)
   #include <iostream>
   #include <string>
   using std::string;
   
   int main()
   {
       string a("Audrey Hepburn");
       string b(a, 0, 6);
       std::cout << b.replace(3,3,"i") << 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).
   
   // Searching Strings (P.418)
   #include <iostream>
   #include <string>
   using std::string;
   
   int main()
   {
       string a("Audrey Hepburn");
       string b("e");
       std::cout << a.find(b) << a.find(b, 5) << std::endl;
       // string::npos = 18446744073709551615, which is 2^64 - 1.
       return 0;
   }