String Characters C++ MCQ

1. Which is an instantiation of the basic_string class template?
a) Character
b) String class
c) Memory
d) None of the mentioned


2. Which character is used to terminate the string?
a) $
b) Null
c) Empty
d) None of the mentioned


3. How does the strings are stored in the memory?
a) Contiguous
b) Non-contiguous
c) Null
d) All of the mentioned


4. What is the output of this program?

1.     #include <iostream>

2.     #include <string>

3.     using namespace std;

4.     int main ()

5.     {

6.         string str;

7.         string str2="Steve jobs";

8.         string str3="He founded apple";

9.         str.append(str2);

10.         str.append(str3, 6, 3);

11.         str.append(str3.begin() + 6, str3.end());

12.         str.append<int>(5, 0x2E);

13.         cout << str << '\n';

14.         return 0;

15.     }

a) Steve jobs
b) He founded apple
c) Steve
d) None of the mentioned


5. What is the output of this program?

1.     #include <iostream>

2.     #include <string>

3.     using namespace std;

4.     int main ()

5.     {

6.         string str ("Test string");

7.         for ( string :: iterator it = str.begin(); it != 5; ++it)

8.             cout << *it;

9.         return 0;

10.     }

a) Test
b) string
c) Test string
d) Error


6. What is the output of this program?

1.     #include <iostream>

2.     #include <string>

3.     using namespace std;

4.     int main ()

5.     {

6.         string name ("Jobs");

7.         string family ("Steve");

8.         name += " Apple ";

9.         name += family;

10.         name += '\n';

11.         cout << name;

12.         return 0;

13.     }

a) Steve Jobs
b) Apple
c) Jobs Apple Steve
d) None of the mentioned


7. What is the output of this program?

1.     #include <iostream>

2.     #include <string>

3.     using namespace std;

4.     int main ()

5.     {

6.         string str="Steve Jobs founded the apple";

7.         string str2 = str.substr (6, 4);

8.         unsigned pos = str.find("the");

9.         string str3 = str.substr (pos);

10.         cout << str2 << ' ' << str3 << '\n';

11.         return 0;

12.     }

a) Jobs the apple
b) the apple
c) Steve
d) Jobs


8. What is the output of this program?

1.     #include <iostream>

2.     #include <string>

3.     using namespace std;

4.     int main ()

5.     {

6.         string str ("Steve jobs");

7.         cout << str.length();

8.         return 0;

9.     }

a) 8
b) 10
c) 12
d) 9


9. In which format does the strings are stored?
a) Stack
b) Heap
c) Both a & b
d) None of the mentioned


10. What will happen if a string is empty?
a) It can’t be created
b) Raises an error
c) It can be used
d) None of the mentioned