Programming in C MCQ - Functions and Recursions

16 The default parameter passing mechanism is

A
call by value
B
call by reference
C
call by value result
D
none of above

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Correct AnswerOption A

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Which means a function will be manipulating a copy of the local variable, passed as argument. So. any change will be local and hence will not be reflected in the calling routine.

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17 Use of functions

A
helps to avoid repeating a set of statements many times
B
enhances the logical clarity of the program
C
helps to avoid repeated programming across programs
D
all of the above

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Correct AnswerOption D

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18 Pick the correct statements

A
The body of a function should have only one return statement
B
The body of a function may have many return statements
C
A function can return only one value to the calling environment
D
Both (B) & (C)

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Correct AnswerOption D

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19 max is a function that returns the larger of the two integers, given as arguments. Which of the following statements finds the largest of three given numbers?

A
max (max (a, b), max (a, c))
B
max(b, max(a, c))
C
max (max (a, b). max ( b, c ))
D
All of the above

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Correct AnswerOption D

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20 Forward declaration is absolutely necessary

A
if a function returns a non-integer quantity
B
if the function call precedes its definition
C
if the function call precedes its definition and the function returns a non-integer quantity
D
none of the above

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Correct AnswerOption C

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