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⇱ Quiz about GATE || C Programming || PYQS (2010 to 2025)

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Question 1

Consider the following C program:



The output of the above C program is _____. GATE CSE || 2019 NAT || 2-mark


  • 10

Question 2

Match the following: 2017 SET 2 || MCQ || 1-mark

(P) static char var ;

(i) Sequence of memory locations to store address

(Q) m = malloc (10); 

   m = NULL;

(ii) A variable located in data section of memory

(R) char*ptr[10];

(iii) Request to allocate a CPU register to store data

(S) register int var1;

(iv) A lost memory which cannot be freed


  • P→(ii), Q→(iv), R→(i), S→(iii)

  •  P→(ii), Q→(i), R→(iv), S→(iii)


  • P→(ii), Q→(iv), R→(iii), S→(i)

  • P→(iii), Q→(iv), R→(i), S→(ii)

Question 3

Consider the following function implemented in C:

The output of invoking printxy(1, 1) is 2017 SET 2 || MCQ || 2-mark



  • 0, 0

  • 0 ,1

  • 1, 0

  • 1, 1

Question 4

Consider the C program fragment below which is meant to divide x by y using repeated subtractions. The variables x, y, q and r are all unsigned int.


Which of the following conditions on the variables x, y, q and r before the execution of the fragment will ensure that the loop terminates in a state satisfying the condition x == (y*q + r)? 2017 SET 2|| MCQ || 2-mark


  • (q == r) && (r == 0)


  •  (x > 0) && (r == x) && (y > 0)


  • (q == 0) && (r == x) && (y > 0)

  •  (q == 0) && (y > 0)

Question 5

Consider the following snippet of a C program. Assume that swap(&x, &y)  exchanges the contents of x and y.

The output of the program is ________. GATE CSE || 2017 SET 2 || NAT || 2-mark |




  • 3

Question 6

Consider the following C program.

The output of the program is ______ GATE CSE || 2017 SET 2 || NAT || 2-mark





  • 0

Question 7

Consider the following C program.

The output of the program is _________ . GATE || 2017 SET 2 || NAT || 2-mark




  • 2

Question 8

Consider the following C code:

The code suffers from which one of the following problems: 2017 SET 1 ||MCQ || 1-mark


  •  compiler error as the return of malloc is not typecast approximately

  • compiler error because the comparison should be made as x==NULL and not as shown

  • compiles successfully but execution may result in dangling pointer

  • compiles successfully but execution may result in memory leak

Question 9

Consider the following two functions.


The output printed when fun1(5) is called is 2017 SET 1 || MCQ || 2-mark


  • 53423122233445

  •  53423120112233

  • 53423122132435

  • 53423120213243

Question 10

Consider the following C program.



Recall that strlen is defined in string.h as returning a value of type size_t, which is an unsigned int. The output of the program is _________.   2017 SET 1 || NAT || 2-mark


  • 3

There are 58 questions to complete.

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