Interview Questions

1. What type of Exceptions does C++ handle?

Options:

a. Synchronous

b. Asynchronous

c. Both

d. None

Reveal Answer

2. Where does the program control transfers to when exception arises?

Options:

a. catch

b. handlers

c. Throw

d. none of the mentioned

Reveal Answer

3. Which keyword is used to check exception in the block of code?

Options:

a. catch

b. throw

c. try

d. none of the mentioned

Reveal Answer

4. What will happen when the exception is not caught in the program?

Options:

a. error

b. program will execute

c. block of that code will not execute

d. none of the mentioned

Reveal Answer

5. What is the output of this program? #include <iostream> using namespace std; int main() { int age = 0; try { if (age < 0) { throw "Positive Number Required"; } cout << age; } catch(const char *Message) { cout << "Error: " << Message; } return 0; }

Options:

a. 0

b. Error:Positive Number Required

c. compile time error

d. none of the mentioned

Reveal Answer

6. What is the output of this program? #include <iostream> using namespace std; void PrintSequence(int StopNum) { int Num; Num = 1; while (true) { if (Num >= StopNum) throw Num; cout << Num; Num++; } } int main(void) { try { PrintSequence(20); } catch(int ExNum) { cout << "Caught an exception with value: " << ExNum; } return 0; }

Options:

a. compile time error

b. prints first 19 numbers

c. prints first 19 numbers and throws exception at 20

d. none of the mentioned

Reveal Answer

7. What is the output of this program? #include <iostream> using namespace std; int main() { char* buff; try { buff = new char[1024]; if (buff == 0) throw "Memory allocation failure!"; else cout << sizeof(buff) << "Byte successfully allocated!"<<endl; } catch(char *strg) { cout<<"Exception raised: "<<strg<<endl; } return 0; }

Options:

a. Byte successfully allocated

b. 4

c. 4 Bytes allocated successfully.

d. 5

Reveal Answer

8. What will happen when the handler is not found for exception?

Options:

a. Calls the standard library function terminate()

b. raise an error

c. executes the remaining block

d. none of the mentioned A

Reveal Answer

9. Can we write our custom Exceptions?

Options:

a. Yes

b. No

Reveal Answer

Interview Questions and Answer

1. What type of Exceptions does C++ handle?

2. Where does the program control transfers to when exception arises?

3. Which keyword is used to check exception in the block of code?

4. What will happen when the exception is not caught in the program?

5. What is the output of this program? #include <iostream> using namespace std; int main() { int age = 0; try { if (age < 0) { throw "Positive Number Required"; } cout << age; } catch(const char *Message) { cout << "Error: " << Message; } return 0; }

8. What will happen when the handler is not found for exception?

9. Can we write our custom Exceptions?

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