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Exercise:

► Section 1

Section 2

Section 3

01. What is the correct value to return to the operating system upon the successful completion of a program?
A. -1 B. 1
C. 0 D. Programs do not return a value.

Answer and Explanation

Answer: 0

Explanation:
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02. What is the only function all C programs must contain?
A. start() B. system()
C. main() D. program()

Answer and Explanation

Answer: main()

Explanation:
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03. What punctuation is used to signal the beginning and end of code blocks?
A. { } B. -> and <-
C. BEGIN and END D. ( and )

Answer and Explanation

Answer: { }

Explanation:
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04. What punctuation ends most lines of C code?
A. . B. ;
C. : D. '

Answer and Explanation

Answer: ;

Explanation:
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05. Which of the following is a correct comment?
A. */ Comments */ B. ** Comment **
C. /* Comment */ D. { Comment }

Answer and Explanation

Answer: /* Comment */

Explanation:
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06. Which of the following is not a correct variable type?
A. float B. real
C. int D. double

Answer and Explanation

Answer: real

Explanation:
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07. Which of the following is the correct operator to compare two variables?
A. := B. =
C. equal D. ==

Answer and Explanation

Answer: ==

Explanation:
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08. What are storage classes in 'C' language? Choose multiple options.
a. register keyword
b. extern keyword
c. automatic
d. static
A. a,b,c B. a,b,c,d
C. e,f D. none of these

Answer and Explanation

Answer: e,f

Explanation:
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09. How many storage class specifiers are present in "C" language?
A. 3 B. 4
C. 5 D. 6

Answer and Explanation

Answer: 4

Explanation:
auto, register, static and extern are the storage class specifiers in "C".  

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10. How many variables scopes are there in "C" language?
A. 2 B. 3
C. 4 D. 5

Answer and Explanation

Answer: 4

Explanation:
body, function, program and file scope in "C".

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