Classical

C Programming MCQ - Constant Variables & Data Types

11:   C programming language provides operations which deal directly with objects such as
A. strings and sets
B. lists and arrays
C. characters, integers, and floating point numbers
D. all of these
 
 

Option: C

Explanation :

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12:   C programming language by itself provides
A. input facility
B. output facility
C. both input and output facilities
D. no input and output facilities
 
 

Option: D

Explanation :

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13:   The variables which can be accessed by all modules in a program, are called
A. local variables
B. internal variables
C. external variable
D. global variables
 
 

Option: D

Explanation :

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Deepak prajapat said: (9:28am on Sunday 10th January 2016)
But external variable and global variable is same term

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14:   The rule for implicit type conversion in 'C' is
A. int < unsigned < float < double
B. unsigned < int < float < double
C. int < unsigned < double < float
D. unsigned < int < double < float
 
 

Option: A

Explanation :

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15:   Consider the following statement
#define hypotenuse (a, b) sqrt (a*a + b*b);
The macro-call hypotenuse (a + 2, b + 3);
A. finds hypotenuse of triangle with sides a + 2 and b+3
B. finds square root of (a + 2)2 + (b + 3)2
C. is meaningless
D. finds square root of 3*a + 4*b + 5
 
 

Option: D

Explanation :

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deepika said: (7:39am on Saturday 9th February 2013)
how
MAYANK said: (1:22am on Thursday 9th May 2013)
he macro will simply be replaced anywhEre they are called(no concept of brackets or parenthesis).thus in hypotenuse(a 2,b 3)a*a b*b = a 2*a 2 b 3*b 3= a 2a b 3b 5= 3a 4b 5

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