Recent questions and answers in Programming - GATE Overflow

+9 votes

2 answers

1

GATE2006-56, ISRO2009-58
Consider the following code written in a pass-by-reference language like FORTRAN and these statements about the code. subroutine swap(ix,iy) it = ix L1 : ix = iy L2 : iy = it end ia = 3 ib = 8 call swap (ia, ib+5) print *, ia, ib end S1: The ... 8 S5: The program will print 13 and -2 Exactly the following set of statement(s) is correct: S1 and S2 S1 and S4 S3 S1 and S5

answered 19 hours ago in Programming by JashanArora Active (1.8k points) | 2.9k views

+5 votes

3 answers

2

ISRO2009-29
A one dimensional array A has indices 1....75. Each element is a string and takes up three memory words. The array is stored at location 1120 decimal. The starting address of A[49] is 1267 1164 1264 1169

answered 20 hours ago in Programming by JashanArora Active (1.8k points) | 2k views

+29 votes

3 answers

3

GATE2000-1.17, ISRO2015-79
Consider the following C declaration: struct ( short x[5]; union { float y; long z; } u; )t; Assume that the objects of the type short, float and long occupy $2$ bytes, $4$ bytes and $8$ bytes, respectively. The memory requirement for variable $t$, ignoring alignment consideration, is: $22$ bytes $14$ bytes $18$ bytes $10$ bytes

answered 2 days ago in Programming by faisali (15 points) | 5.3k views

0 votes

2 answers

4

UGCNET-june2009-ii-15
What is the value of ‘b’ after the execution of the following code statements: C=10; B=++c + ++c; (A) 20 (B) 22 (C) 23 (D) None

answered 3 days ago in Programming by hem chandra joshi Active (4.1k points) | 526 views

0 votes

2 answers

5

CMI2019-A-10
The next two questions refer to the following program. In the code below reverse$(A,i,j)$ takes an array $A,$ indices $i$ and $j$ with $i\leq j,$ and reverses the segment $A[i],A[i+1],\cdots,A[j].$ For instance if $A=[0,1,2,3,4,5,6,7]$ then, after we ... return; } The number of times the test $A[ j ] > A[ m ]$ is executed is: $4950$ $5050$ $10000$ Depends on the contents of $A$

answered 4 days ago in Programming by HanuamntappaBudihal (73 points) | 43 views

+1 vote

3 answers

6

c programming
#include <stdio.h> int fun() { static int num = 16; return num--; } int main() { for(fun(); fun(); fun()) printf("%d ", fun()); return 0; } Predict the output along with the explanation?

answered 5 days ago in Programming by Praveenk99 (49 points) | 440 views

0 votes

4 answers

7

C-Programming
Find output #include<stdio.h> void main() { int i=0; for(; i++ ; printf("%d",i)); printf("%d",i); } Plz explain ?

answered Nov 28 in Programming by HanuamntappaBudihal (73 points) | 417 views

+5 votes

1 answer

8

Hashing with Linear probing
Consider an initially empty hash table of length 10. Following are the keys in hash table inserted using mod function h(k)=k mod 10. Slot Number Value 0 1 91 2 3 33 4 44 5 23 6 64 7 77 8 9 How many different insertion sequences of keys would result in the above hash table? My answer comes to be 56, is it correct?

answered Nov 24 in Programming by Chinmaypk5 (19 points) | 489 views

+41 votes

4 answers

9

GATE2006-IT-50
Which one of the choices given below would be printed when the following program is executed? #include <stdio.h> void swap (int *x, int *y) { static int *temp; temp = x; x = y; y = temp; } void printab () { static int i, a = -3, b = -6; i = 0; while (i <= 4) { if ((i++)%2 == 1) continue; ... $a = 12, b = 9$ $a = 3, b = 6$ $a = 3, b = 6$ $a = 6, b = 3$ $a = 15, b = 12$

answered Nov 22 in Programming by JashanArora Active (1.8k points) | 5.5k views

+21 votes

4 answers

10

GATE2012-3
What will be the output of the following C program segment? char inChar = 'A'; switch ( inChar ) { case 'A' : printf ("Choice A \n"); case 'B' : case 'C' : printf ("Choice B"); case 'D' : case 'E' : default : printf ("No Choice"); } No Choice Choice A Choice A Choice B No Choice Program gives no output as it is erroneous

answered Nov 21 in Programming by HanuamntappaBudihal (73 points) | 2.3k views

+64 votes

4 answers

11

GATE2015-1-35
What is the output of the following C code? Assume that the address of $x$ is $2000$ (in decimal) and an integer requires four bytes of memory. int main () { unsigned int x [4] [3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}, {10, 11, 12}}; printf ("%u, %u, %u", x + 3, *(x + 3), *(x + 2) + 3); } $2036, 2036, 2036$ $2012, 4, 2204$ $2036, 10, 10$ $2012, 4, 6$

answered Nov 19 in Programming by `JEET Boss (13.1k points) | 7.8k views

0 votes

2 answers

12

Can any one write 3 D array RMO and CMO formula?

answered Nov 19 in Programming by abhishek363 (23 points) | 379 views

0 votes

2 answers

13

Data structure Set 2-28
A circular linked list is used to represents a queue. A single variable L is used to access the queue. To which node should L point such that both the operation enqueue and dequeue can be performed in constant time ? node next to front front node not possible with a single node rear node

answered Nov 16 in Programming by logan1x Junior (879 points) | 75 views

0 votes

1 answer

14

Data structure Set 2-6
Assume that we have a ternary tree in which each node can have at most $3$ children, namely left, middle and right. Consider the following function to calculate total number of nodes with exactly $3$ children. int func Node *L { int i; if L==NULL return 0; i=L --> left ... middle +func L -> right ; i+ func L -> left+ func L -> middle ; i + func L -> left ; i ;

answered Nov 15 in Programming by logan1x Junior (879 points) | 46 views

+19 votes

5 answers

15

GATE2005-32
Consider the following C program: double foo (double); /* Line 1 */ int main() { double da, db; //input da db = foo(da); } double foo (double a) { return a; } The above code compiled without any error or ... warning or error some compiler-warnings not leading to unintended results some compiler-warnings due to type-mismatch eventually leading to unintended results compiler errors

answered Nov 12 in Programming by Shailendra_ Junior (555 points) | 4k views

+16 votes

4 answers

16

GATE2005-81b
double foo(int n) { int i; double sum; if(n == 0) { return 1.0; } else { sum = 0.0; for(i = 0; i < n; i++) { sum += foo(i); } return sum; } } Suppose we modify the above function $foo()$ ... the time complexity for function $foo()$ is significantly reduced. The space complexity of the modified function would be: $O(1)$ $O(n)$ $O(n^2)$ $n!$

answered Nov 9 in Programming by Ekta07_GATE (233 points) | 2.5k views

+38 votes

3 answers

17

GATE2006-57
Consider this C code to swap two integers and these five statements: the code void swap (int *px, int *py) { *px = *px - *py; *py = *px + *py; *px = *py - *px; } S1: will generate a compilation error S2: may generate a segmentation fault ... swap procedure correctly for some but not all valid input pointers S5: may add or subtract integers and pointers S1 S2 and S3 S2 and S4 S2 and S5

answered Nov 8 in Programming by viky17 (63 points) | 5.1k views

+14 votes

7 answers

18

Heap..
1)The number of min heap trees are possible with 15 elements such that every leaf node must be greater than all non-leaf nodes of the tree are ________. -------------------------------------------------------------------------------------------------------------------------- 2)The number of min heap trees are possible with 15 elements_________________

answered Nov 2 in Programming by techbd123 Active (3.1k points) | 1.1k views

0 votes

2 answers

19

Made Easy Test Series:Programming Test
Consider the following function $foo()$ void foo(int n){ if(n<=0) printf("Bye"); else{ printf("Hi"); foo(n-3); printf("Hi"); foo(n-1); } } Let $P(n)$ represent recurrence relation, indicating number of ... $1$ or $2?$

answered Oct 31 in Programming by Shagun Singh (299 points) | 130 views

0 votes

2 answers

20

oops doubt
A default catch block catches, [A]. all thrown objects [B]. no thrown objects [C]. any thrown object that has not been caught by an earlier catch block [D]. all thrown objects that have been caught by an earlier catch block

answered Oct 31 in Programming by Shagun Singh (299 points) | 46 views

+1 vote

2 answers

21

Linked List
Consider the following function in a single linked list int fun(struct node *P, struct node *Q) { if(P==NULL && Q == NULL) return 0; else if(P==NULL || Q==NULL) return 1; else if(P→data!=Q→data) return 1; if(fun(P→ left, ... returns 0, when both trees are same recursively. It compares two given binary trees but return value cannot be used to differentiate the trees None of these

answered Oct 27 in Programming by kunal goswami Junior (533 points) | 86 views

+8 votes

2 answers

22

GATE2001-2.19
Consider the following program Program P2 var n : int; procedure W(var x : int) begin x = x + 1; print x; end procedure D begin var n : int; n = 3; W(n); end begin \\begin P2 n=10; D; end If the language has dynamic scooping and parameters are passed by reference, what will be printed by the program? 10 11 3 None of the above

answered Oct 23 in Programming by Navneet singh (21 points) | 1.5k views

+36 votes

4 answers

23

GATE2003-2
Assume the following C variable declaration: int *A[10], B[10][10]; Of the following expressions: $A[2]$ $A[2][3]$ $B[1]$ $B[2][3]$ which will not give compile-time errors if used as left hand sides of assignment statements in a C program? I, II, and IV only II, III, and IV only II and IV only IV only

answered Oct 23 in Programming by Navneet singh (21 points) | 6.1k views

+1 vote

2 answers

24

Self Doubt-Programming
Can someone explain the output of this code? and what (char*) is doing actually? #include<stdio.h> struct Ournode{ char x, y, z; }; int main() { struct Ournode p={'1', '0', 'a'+2}; struct Ournode *q=&p; printf("%c, %c", '*((char*)q+1)', '*((char*)q+2)'); return 0; }

answered Oct 23 in Programming by Shagun Singh (299 points) | 148 views

+2 votes

2 answers

25

UGCNET-June-2019-II-22
Consider the following C-code fragment running on a $32$-bit $X86$ machine: typedef struct { union { unsigned char a; unsigned short b; } U; unsigned char c; }S; S B[10]; S*p=&B[4]; S*q=&B[5]; p → U.b=0x1234; /* structure S takes 32-bits */ If M is the value of $q-p$ ... $(M,N)$ is $(1,1)$ $(3,2)$ $(1,2)$ $(4,4)$

answered Oct 23 in Programming by Shagun Singh (299 points) | 390 views

+15 votes

12 answers

26

GATE2017-2-14
Consider the following function implemented in C: void printxy(int x, int y) { int *ptr; x=0; ptr=&x; y=*ptr; *ptr=1; printf(“%d, %d”, x, y); } The output of invoking $printxy(1,1)$ is: $0, 0$ $0, 1$ $1, 0$ $1, 1$

answered Oct 20 in Programming by techbd123 Active (3.1k points) | 2.6k views

+15 votes

5 answers

27

GATE2018-45
Consider the following program written in pseudo-code. Assume that $x$ and $y$ are integers. Count (x, y) { if (y !=1 ) { if (x !=1) { print("*"); Count (x/2, y); } else { y=y-1; Count (1024, y); } } } The number of times that the $print$ statement is executed by the call $Count(1024, 1024)$ is _____

answered Oct 19 in Programming by JashanArora Active (1.8k points) | 3.5k views

+26 votes

7 answers

28

GATE2017-2-43
Consider the following snippet of a C program. Assume that swap $(\&x, \&y)$ exchanges the content of $x$ and $y$: int main () { int array[] = {3, 5, 1, 4, 6, 2}; int done =0; int i; while (done==0) { done =1; for (i=0; i<=4; i++) { if ( ... ; array[i-1]) { swap(&array[i], &array[i-1]); done =0; } } } printf( %d , array[3]); } The output of the program is _______

answered Oct 19 in Programming by techbd123 Active (3.1k points) | 5.1k views

+2 votes

2 answers

29

GATE2019-53
Consider the following C program: #include <stdio.h> int main() { int a[] = {2, 4, 6, 8, 10}; int i, sum=0, *b=a+4; for (i=0; i<5; i++) sum=sum+(*b-i)-*(b-i); printf("%d\n", sum); return 0; } The output of the above C program is _______

answered Oct 17 in Programming by techbd123 Active (3.1k points) | 2.4k views

+35 votes

9 answers

30

GATE2017-2-55
Consider the following C program. #include<stdio.h> #include<string.h> int main() { char* c=”GATECSIT2017”; char* p=c; printf(“%d”, (int)strlen(c+2[p]-6[p]-1)); return 0; } The output of the program is _______

answered Oct 16 in Programming by JashanArora Active (1.8k points) | 8.5k views

+2 votes

3 answers

31

Pointers address
https://gateoverflow.in/?qa=blob&qa_blobid=14433986388826671915 int main() { int a = 10; int *b = &a; scanf("%d",b); printf("%d",a+50); } What will be the Output of the following code if input given is $25$ ?

answered Oct 16 in Programming by Shagun Singh (299 points) | 142 views

+2 votes

3 answers

32

C Program Output and Explaination
void fun(int *p) { int q = 10; p = &q; z } int main() { int r = 20; int *p = &r; fun(p); printf("%d", *p); return 0; }

answered Oct 16 in Programming by Shagun Singh (299 points) | 229 views

+13 votes

3 answers

33

GATE2001-2.17 | UGCNET-AUG2016-III-21
What is printed by the print statements in the program $P1$ assuming call by reference parameter passing? Program P1() { x = 10; y = 3; func1(y,x,x); print x; print y; } func1(x,y,z) { y = y + 4; z = x + y + z } $\text{10, 3}$ $\text{31, 3}$ $\text{27, 7}$ None of the above

answered Oct 14 in Programming by techbd123 Active (3.1k points) | 2.8k views

+54 votes

7 answers

34

GATE2017-1-53
Consider the following C program. #include<stdio.h> #include<string.h> void printlength(char *s, char *t) { unsigned int c=0; int len = ((strlen(s) - strlen(t)) > c) ? strlen(s) : strlen(t); printf("%d\n", len); } void main() ... is defined in $string.h$ as returning a value of type $size\_t$, which is an unsigned int. The output of the program is __________ .

answered Oct 13 in Programming by JashanArora Active (1.8k points) | 8.2k views

+40 votes

6 answers

35

GATE2017-1-36
Consider the C functions foo and bar given below: int foo(int val) { int x=0; while(val > 0) { x = x + foo(val--); } return val; } int bar(int val) { int x = 0; while(val > 0) { x= x + bar( ... will result in: Return of $6$ and $6$ respectively. Infinite loop and abnormal termination respectively. Abnormal termination and infinite loop respectively. Both terminating abnormally.

answered Oct 12 in Programming by JashanArora Active (1.8k points) | 7.9k views

+35 votes

4 answers

36

GATE2017-1-55
The output of executing the following C program is _______________ . #include<stdio.h> int total(int v) { static int count = 0; while(v) { count += v&1; v >>= 1; } return count; } void main() { static int x=0; int i=5; for(; i>0; i--) { x = x + total(i); } printf("%d\n", x); }

answered Oct 10 in Programming by techbd123 Active (3.1k points) | 6.7k views

+29 votes

6 answers

37

GATE2017-1-13
Consider the following C code: #include<stdio.h> int *assignval (int *x, int val) { *x = val; return x; } void main () { int *x = malloc(sizeof(int)); if (NULL == x) return; x = assignval (x,0); if (x) { x = ( ... 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.

answered Oct 10 in Programming by JashanArora Active (1.8k points) | 7.1k views

+26 votes

5 answers

38

GATE2015-3-7
Consider the following C program segment. # include <stdio.h> int main() { char s1[7] = "1234", *p; p = s1 + 2; *p = '0'; printf("%s", s1); } What will be printed by the program? $12$ $120400$ $1204$ $1034$

answered Oct 6 in Programming by sp_gateoverflow (11 points) | 2.7k views

+1 vote

1 answer

39

c type casting
what is the meaning of k= (char *) (i*j) it will return k =(char *) (300)

answered Oct 6 in Programming by tech_beardo (205 points) | 57 views

+31 votes

5 answers

40

GATE2015-3-26
Consider the following C program #include<stdio.h> int main() { static int a[] = {10, 20, 30, 40, 50}; static int *p[] = {a, a+3, a+4, a+1, a+2}; int **ptr = p; ptr++; printf("%d%d", ptr-p, **ptr); } The output of the program is _______.

answered Oct 6 in Programming by JashanArora Active (1.8k points) | 5.1k views

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