C Fundamentals(C Program ) Questions and answers for exam Preparation

Question 1. Who is father of C Language?

Bjarne Stroustrup
James A. Gosling
Dennis Ritchie
Dr. E.F. Codd

Explanation:-

Answer: Option C. -> Dennis Ritchie

Question 2. C was primarily developed as

System programming language
General purpose language
Data processing language
None of the above.

Explanation:-

Answer: Option A. -> System programming language

Question 3. C programs are converted into machine language with the help of

An Editor
A compiler
An operating system
None of these.

Explanation:-

Answer: Option B. -> A compiler
A compiler is a system software that converts high level language into machine level language.

Question 4. C Language developed at _________?

AT & T's Bell Laboratories of USA in 1972
AT & T's Bell Laboratories of USA in 1970
Sun Microsystems in 1973
Cambridge University in 1972

Explanation:-

Answer: Option A. -> AT & T's Bell Laboratories of USA in 1972

Question 5. For 16-bit compiler allowable range for integer constants is ________?

-3.4e38 to 3.4e38
-32767 to 32768
-32668 to 32667
-32768 to 32767

Explanation:-

Answer: Option D. -> -32768 to 32767
In a 16 Bit C compiler we have 2 bytes to store an integer, and 1 byte for a character.
For unsigned integers the range is 0 to 65535.
For signed integers the range is -32768 to 32767.
For unsigned character, 0 to 255

Question 6. Standard ANSI C recognizes ______ number of keywords?

Explanation:-

Answer: Option B. -> 32

Question 7. Which one of the following is not a valid identifier?

_examveda
1examveda
exam_veda
examveda1

Explanation:-

Answer: Option B. -> 1examveda
The first character must be a letter or special symbol underscore( _ ).

Question 8. A C variable cannot start with

A number
A special symbol other than underscore
Both of the above
An alphabet

Explanation:-

Answer: Option C. -> Both of the above

Question 9. What will be printed after execution of the following program code?
main()
{
printf("\\nab");
printf("\\bsi");
printf("\\rha");
}

Explanation:-

Answer: Option D. -> hai
\\n - newline - printf("\\nab"); - Prints 'ab'
\\b - backspace - printf("\\bsi"); - firstly '\\b' removes 'b' from 'ab ' and then prints 'si'. So after execution of printf("\\bsi"); it is 'asi'.
\\r - linefeed - printf("\\rha"); - Now here '\\r' moves the cursor to the start of the current line and then override 'asi' to 'hai' .

Question 10. Which one of the following is not a reserved keyword for C?

Explanation:-

Answer: Option C. -> main