Interview Mantra

This quiz is a past event on Twitter. Twitter Quiz is unique format of quiz conducted by Interview Mantra. It is a short quiz of 10 questions. This quiz was on C Language. Read more about Interview Mantra Twitter Quiz>

The Quiz questions, answers and their explanations have been consolidated as a blog post for your convenience.

1. Question1:
   Running the C code snippet:

   main()
   {
    printf("Hello\n");
   }

   a)prints Hello b)compilation error c)run time error

   Answer: a) prints Hello

2. Question2:
   In C, ‘double’ is a data type. True or False?

   Answer: True.
   C has the following basic data types: char, int, double, float.

3. Question3:
   The size of the basic data type, ‘int’ in C is : a)1 byte, b)4 bytes, c)machine dependent?

   Answer: c) machine dependent
   C compiler is free to choose the size of data types appropriate for its hardware.

4. Question4:
   The escape sequence ‘\t’ when used in printf statement
   a) prints a new line b) prints a tab c) does nothing ?

   Answer: b) Prints a tab
   Escape sequence ‘\t’ is used for padding a tab space

5. Question5:
   The default return value of a function in C (when return type not specified) is a)int, b)char, c)void ?

   Answer: a) int

6. Question6:
   In C statement,

   if((a==5)||(a>7)),

   there are 2 expressions (a==5), (a>7). Which of them is evaluated first? a) a==5 b) a>7

   Answer: a) a==5

7. Question7:
   In C, the size of an array, once declared is constant, True or False?

   Answer: True

8. Question8:
   In a C program, there can be multiple functions with same name. True or False ?

   Answer: False
   Having same name for mulitple functions with different parameters (function overloading) is not allowed in C but is allowed in C++.

9. Question9:
   C functions use: a)Call by value b)Call by reference ?

   Answer: a) Call by value
   Call or Pass by reference does not exist in C, whereas C++ uses call by reference. Read More

10. Question10:
    A string in C is a char array ending with a special character ‘\0′. True or False?

    Answer: True
    char arr[] = {‘H’, ‘E’, ‘L’, ‘L’, ‘O’}; This character array ‘arr’, when appended with ‘\0′ becomes a string. Example of a string, char str[]= {‘H’, ‘E’, ‘L’, ‘L’, ‘O’,'\0′};

About the Author:  This post was written by Utsav Banerjee. You can reach Utsav on email at fugitiveland@gmail.com