Question Bank - C Programming

1. We can insert pre written code in a C program by using

1.         #read
2.         #get
3.         #include
4.         #put

Answer: Option 3

2. Difference between calloc() and malloc()

1.     calloc() takes a single argument while malloc() needs two arguments
2.     malloc() takes a single argument while calloc() needs two arguments
3.     malloc() initializes the allocated memory to ZERO
4.     calloc() initializes the allocated memory to NULL

Answer: Option 2

3. The first expression in a for loop is

1.         Step value of loop
2.         Value of the counter variable
3.         Any of above
4.         None of above

Answer: Option 2

4. Exit() is same as return

1.     TRUE
2.     FALSE

Answer: Option 2

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5. Break statement is used for

1.         Quit a program
2.         Quit the current iteration
3.         Both of above
4.         None of above

Answer: Option 2

6. Due to variable scope in c

1.         Variables created in a function cannot be used another function
2.         Variables created in a function can be used in another function
3.         Variables created in a function can only be used in the main function
4.         None of above

Answer: Option 1

7. What will be the output of following program
    #include
    main()
    {
    int x,y = 10;
    x = y * NULL;
    printf(\"%d\",x);
    }

1.         error
2.         0
3.         10
4.         Garbage value

Answer: Option 2

8. calloc() belongs to which library

1.     stdlib.h
2.     malloc.h
3.     calloc.h
4.     None of above

Answer: Option 1

9. If include files can be nested

1.     Yes
2.     No

Answer: Option 1

10. Which of the following below is/are valid C keywords

1.     integer
2.     int
3.     null
4.     none of above

Answer: Option 2


11. total number of keywords in C are

1.     30
2.     32
3.     48
4.     132

Answer: Option 2

12. What is use of \r in c

1.     used to insert a vertical tab
2.     used to insert a tab
3.     places cursor at the end of line
4.     places cursor at the start of line

Answer: Option 4

13. Out of following program :
float x = 10.7;
int i;
i = (int) x;
print i;

1.     null
2.     error
3.     10
4.     garbage value

Answer: Option 3

14. rand() function returns

1.     float value
2.     integer value
3.     any type
4.     none of above

Answer: Option 2

15. The compiler in C ignores all text till the end of line using

1.     //
2.     /
3.     */
4.     none of above

Answer: Option 1

16. Which operator in c can't be overloaded

1.     %
2.     +
3.     ::
4.     -

Answer: Option 3

17. Which operator has the highest priority

1.     ()
2.     []
3.     *
4.     /

Answer: Option 1

18. What is the purpose of getc()

1.     read a character from STDIN
2.     read a character from a file
3.     read all file
4.     read file random

Answer: Option 2

19. Can getch() be used to echo the input

1.     Yes
2.     No

Answer: Option 2

20. If (*p) and **p is same

1.     No
2.     Yes

Answer: Option 1