Explore topic-wise MCQs in C Programming.

This section includes 66 Mcqs, each offering curated multiple-choice questions to sharpen your C Programming knowledge and support exam preparation. Choose a topic below to get started.

51.

In a file contains the line ''I am a boyrn'' then on reading this line into the array str using fgets(). What will str contain?

A. 'I am a boy\r\n\0''
B. 'I am a boy\r\0''
C. 'I am a boy\n\0''
D. 'I am a boy''
Answer» D. 'I am a boy''
Discussion
52.

Which of the following operations can be performed on the file ''NOTES.TXT'' using the below code?FILE *fp;fp = fopen(''NOTES.TXT'', ''r+'');

A. Reading
B. Writing
C. Appending
D. Read and Write
Answer» E.
Discussion
53.

What is the purpose of ''rb'' in fopen() function used below in the code?FILE *fp;fp = fopen(''source.txt'', ''rb'');

A. open ''source.txt'' in binary mode for reading
B. open ''source.txt'' in binary mode for reading and writing
C. Create a new file ''source.txt'' for reading and writing
D. None of above
Answer» B. open ''source.txt'' in binary mode for reading and writing
Discussion
54.

Consider this statement: typedef enum good {a, b, c} hello; Which of the following statements is incorrect about hello?

A. hello is a typedef of enum good
B. hello is a structure
C. hello is a variable of type enum good
D. the statement shown above is erroneous
Answer» B. hello is a structure
Discussion
55.

Presence of loop in a linked list can be tested by ________

A. Traveling the list, if NULL is encountered no loop exists
B. Comparing the address of nodes by address of every other node
C. Comparing the the value stored in a node by a value in every other node
D. None of the mentioned
Answer» C. Comparing the the value stored in a node by a value in every other node
Discussion
56.

Bit fields can only be declared as part of a structure.

A. false
B. true
C. Nothing
D. Varies
Answer» C. Nothing
Discussion
57.

One of the major difference between typedef and #define is that typedef interpretation is performed by the _________________ whereas #define interpretation is performed by the _____________

A. pre-processor, compiler
B. user, pre-processor
C. compiler, pre-processor
D. compiler, user
Answer» D. compiler, user
Discussion
58.

Which of the following may create problem in the typedef program?

A. ;
B. printf/scanf
C. Arithmetic operators
D. All of the mentioned
Answer» E.
Discussion
59.

Which of the following is not allowed?

A. Arrays of bit fields
B. Pointers to bit fields
C. Functions returning bit fields
D. None of the mentioned
Answer» E.
Discussion
60.

Which function is responsible for recording the name 's' and the replacement text 't' in a table?

A. install(s, t);
B. fix(s, t);
C. setup(s, t);
D. settle(s, t);
Answer» B. fix(s, t);
Discussion
61.

Pick the incorrect statement with respect to enums.

A. Two enum symbols cannot have the same value
B. Only integer constants are allowed in enums
C. It is not possible to change the value of enum symbols
D. Enum variables are automatically assigned values if no value is specified
Answer» B. Only integer constants are allowed in enums
Discussion
62.

Arithmetic operations such as addition, subtraction, multiplication and division are allowed on enumerated constants.

A. True
B. False
Answer» B. False
Discussion
63.

Which function is responsible for searching in the table? (For #define IN 1, the name IN and replacement text 1 are stored in a 'table')

A. findout(s);
B. lookup(s);
C. find(s);
D. lookfor(s);
Answer» C. find(s);
Discussion
64.

A user defined data type, which is used to assign names to integral constants is called:

A. Union
B. Array
C. Structure
D. Enum
Answer» E.
Discussion
65.

The keyword typedef cannot be used to give alias names to pointers.

A. True
B. False
Answer» C.
Discussion
66.

typedef int (*PFI)(char *, char *)creates ___________

A. type PFI, for pointer to function (of two char * arguments) returning int
B. error
C. type PFI, function (of two char * arguments) returning int
D. type PFI, for pointer
Answer» B. error
Discussion