C Programming Important Questions and Answers Set - 5
21. What is the right way to access value of structure variable book{ price, page }?
A. printf(“%d%d”, book.price, book.page);
B. printf(“%d%d”, price.book, page.book);
C. printf(“%d%d”, price::book, page::book);
D. printf(“%d%d”, price->book, page->book);
Answer: A. printf(“%d%d”, book.price, book.page);
22. perror( ) function used to ?
A. Work same as printf()
B. prints the error message specified by the
compiler
C. prints the garbage value assigned by the
compiler
D. None of the above
Answer: B. prints the error message specified by the compiler
23. Bitwise operators can operate upon?
A. double and chars
B. floats and doubles
C. ints and floats
D. ints and chars
Answer: D. ints and chars
24. What is C Tokens?
A. The smallest individual units of c program
B. The basic element recognized by the
compiler
C. The largest individual units of program
D. A & B Both
Answer: D. A & B Both
25. What is Keywords?
A. Keywords have some predefine meanings
and these meanings can be changed.
B. Keywords have some unknown meanings
and these meanings cannot be changed.
C. Keywords have some predefine meanings
and these meanings cannot be changed.
D. None of the above
Answer: C. Keywords have some predefine meanings and these meanings cannot be changed.
26. What is constant?
A. Constants have fixed values that do not
change during the execution of a program
B. Constants have fixed values that change
during the execution of a program
C. Constants have unknown values that may
be change during the execution of a program
D. None of the above
Answer: A. Constants have fixed values that do not change during the execution of a program
27. Which is the right way to declare
constant in C?
A. int constant var =10;
B. int const var = 10;
C. const int var = 10;
D. B & C Both
Answer: D. B & C Both
28. Which operators are known as Ternary Operator?
A. ::, ?
B. ?, :
C. ?, ;;
D. None of the above
Answer: B. ?, :
29. In switch statement, each case instance value must be _______?
A. Constant
B. Variable
C. Special Symbol
D. None of the above
Answer: A. Constant
30. What is the work of break keyword?
A. Halt execution of program
B. Restart execution of program
C. Exit from loop or switch statement
D. None of the above
Answer: C. Exit from loop or switch statement
31. What is function?
A. Function is a block of statements that
perform some specific task.
B. Function is the fundamental modular unit. A function is usually designed to perform a specific task.
C. Function is a block of code that performs a specific task. It has a name and it is reusable
D. All the above
Answer: D. All the above
32. Which one of the following sentences is true ?
A. The body of a while loop is executed at
least once.
B. The body of a do … while loop is executed
at least once.
C. The body of a do … while loop is executed
zero or more times.
D. A for loop can never be used in place of a
while loop.
Answer: B. The body of a do … while loop is executed at least once.
33. A binary tree with 27 nodes has _______ null branches.
A. 54
B. 27
C. 26
D. None of the above
Answer: D. None of the above
34. Which one of the following is not a linear data structure?
A. Array
B. Binary Tree
C. Queue
D. Stack
Answer: B. Binary tree
35. Recursive functions are executed in a?
A. First In First Out Order
B. Load Balancing
C. Parallel Fashion
D. Last In First Out Order
Answer: D. Last In First Out Order
36. Queue is a _____________ list.
A. LIFO
B. LILO
C. FILO
D. FIFO
Answer: D. FIFO
37. The statement print f (“%d”, 10 ? 0 ? 5 : 1 : 12); will print?
A. 10
B. 0
C. 12
D. 1
Answer: D. 1
38. To represent hierarchical relationship between elements, which data structure is suitable?
A. Priority
B. Tree
C. Dqueue
D. All of the above
Answer: B. tree
39. Which of the following data structure is linear type?
A. Strings
B. Queue
C. Lists
D. All of the above
Answer: D. All of the above
40. The statement printf(“%c”, 100); will
print?
A. prints 100
B. print garbage
C. prints ASCII equivalent of 100
D. None of the above
Answer: C. prints ASCII equivalent of 100
