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C Language - Functions

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13.

rand() function returns

A.	float value	B.	integer value
C.	any type	D.	none of above

14.

What is prototype of a function in C

A.	It is the return type of a function	B.	It is the return data of the function
C.	It is declaration of a function	D.	It is a datatype

15.

Any type of modification on the parameter inside the function will reflect in actual variable value can be related to

A.	call by value	B.	call by reference
C.	both of above	D.	none of above

16.

Minimum number of temporary variable needed to swap the contents of 2 variable is ?

A.	0	B.	1
C.	2	D.	3

17.

In which header file Null macro is defined ?

A.	iostream.h	B.	preprocessor
C.	stdio.h and stddeth	D.	string.h

18.

Null macro is ?

A.	A macro with name Null	B.	None of Above
C.	A macro defined with no name	D.	A macro which represents Null pointer

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