Recent questions and answers in Programming

+36 votes

3 answers

1

GATE2001-2.18
Consider the following three C functions: $[P1]$ int *g(void) { int x = 10; return (&x); } $[P2]$ int *g(void) { int *px; *px = 10; return px; } $[P3]$ int *g(void) { int *px; px = (int*) malloc (sizeof(int)); *px = 10; return px; } Which of the above three functions are likely to cause problems with pointers? Only $P3$ Only $P1$ and $P3$ Only $P1$ and $P2$ $P1, P2$ and $P3$

answered 2 days ago in Programming by JashanArora (63 points) | 5k views

0 votes

2 answers

2

Programming
The program fragment: int i= 263; putchar (i) (a) prints 263 (b) prints the ASCII equivalent of 263 (c) rings the bell (d) prints garbage

answered 2 days ago in Programming by digvijaydeshmukh (27 points) | 84 views

+1 vote

1 answer

3

MadeEasy Test Series: Programming & DS - Programming In C

answered 5 days ago in Programming by Nigam Modi (21 points) | 125 views

0 votes

1 answer

4

Data structure Set 2-21
Following keys have to be inserted in exact order into the hash table with $9$ slots. $5, 28, 19, 15, 20, 33, 12, 17, 10$ The auxiliary hash functions is $h(k)=K$ mod table size, where table size is $9$ . Which of the following represent the contents of the hash table in correct ... $10,28,19,20,12,5,15,33,17$ $33,28,19,20,12,5,15,10,17$ $20,28,19,10,12,5,15,33,17$

answered 5 days ago in Programming by Anwesha_Mishra (247 points) | 38 views

0 votes

1 answer

5

Data structure Set 2-5
Consider the following sequence $( 50,17,14,8, 13,10, 2,5,7,12)$ what is the Minimum number of interchanges required to make it Max heap? $4$ $2$ $3$ $0$

answered 5 days ago in Programming by Anwesha_Mishra (247 points) | 22 views

+1 vote

1 answer

6

How it works. Please give some example.
Consider the following foo function and identify the return value of foo function. int foo (unsigned int n) { int c, x = 0; while (n! = 0) { if (n & 01) x++; n >>= 1; } return x; } (a) It counts the total number of bits ... counts the number of bits which are zero. (c) It counts the number of occurrences of 01. (d) It returns the same value as n'.

answered Aug 14 in Programming by debasree88 (253 points) | 22 views

+1 vote

1 answer

7

syntatactically correct?
consider the two declarations void *voidPtr; char *charPtr; which of the following assignments are syntactically correct? (a)charPtr= voidPtr (b)*charPtr=voidPtr (c)*voidPtr=*charPtr (d)voidPtr=charPtr please explain!

answered Aug 14 in Programming by Pankaj_Saini (27 points) | 159 views

+1 vote

2 answers

8

made easy
Consider the following C program: Which of the following represents output of above C program? A)1, 0 B)2, 0 C)1, 1 D)2, 1

answered Aug 6 in Programming by Akash 1234Upadhyay (19 points) | 47 views

+1 vote

1 answer

9

pointers
int main() { int i,j; char a[2][3]={{'a','b','c'},{'d','e','f'}}; char b[3][2]; char *p=*b; for(i=0;i<2;i++) { for(j=0;j<3;j++) { *(p+2*j+i)=a[i][j]; } } } please explain this...

answered Aug 4 in Programming by abhishek363 (11 points) | 110 views

0 votes

1 answer

10

Self Doubt:Infinite loop
#include<iostream> using namespace std; int i=0; void a() { i+=1; cout<<i<< ".hello"<<endl; a(); } int main() { a(); } For this above code the output is only upto → 64891.Hello Does this mean that that the stack can hold only 64891 recursive calls? (I am using dev c++)

answered Jul 31 in Programming by SHRIHARI NAIK (17 points) | 86 views

0 votes

3 answers

11

Made Easy Test Series:Programming(FLT4)
#include<stdio.h> #include<iostream> int bar(int m, int n){ if(m==0)return n; if(n==0)return m; return bar(n%m,m); } int foo(int m,int n){ return(m*n/bar(m,n)); } int main(){ int x=foo(1000,1500); printf("%d",x); return 0; } Output of the program is ___________

answered Jul 31 in Programming by Akash 1234Upadhyay (19 points) | 122 views

0 votes

4 answers

12

ugc net 2018 july -26
A binary search tree in which every non leaf node has non empty left and right subtrees is called a strictly binary tree . Such a tree with 19 leaves cannot have more than 37 nodes has exactly 37 nodes has exactly 35 nodes cannot have more than 35 nodes

answered Jul 30 in Programming by shweta1920 Junior (691 points) | 1.6k views

+1 vote

1 answer

13

Finding deepest node of a binary tree.
We want to find an algorithm for finding the deepest node of a binary tree. My idea is to use BFS (Breadth-first search) and while visiting each node we will initialize it's node.dvalue(which will indicate how much far is node away ... node for whose dvalue is maximum, and that will give me node with the highest depth. Is my above-suggested algorithm correct?

answered Jul 28 in Programming by anishtiwary0177 (11 points) | 86 views

+2 votes

2 answers

14

C PROGRAM

answered Jul 25 in Programming by debasree88 (253 points) | 37 views

+2 votes

4 answers

15

What is the difference between order and degree of a B-tree
What is the difference between order and degree of a B-tree are they same or different

answered Jul 22 in Programming by mint Active (1.3k points) | 2.2k views

+1 vote

3 answers

16

GATE2019-18
Consider the following C program : #include<stdio.h> int jumble(int x, int y){ x = 2*x+y; return x; } int main(){ int x=2, y=5; y=jumble(y,x); x=jumble(y,x); printf("%d \n",x); return 0; } The value printed by the program is ______________.

answered Jul 19 in Programming by manikantsharma (315 points) | 2.2k views

0 votes

1 answer

17

Tree data structure
How many binary trees are possible with given preorder:- ABCD And given postorder:- cdba

answered Jul 11 in Programming by manal jain (11 points) | 47 views

+1 vote

2 answers

18

TIFR2019-B-8
Consider the following program fragment: var a,b : integer; procedure G(c,d: integer); begin c:=c-d; d:=c+d; c:=d-c end; a:=2; b:=3; G(a,b); If both parameters to $G$ are passed by reference, what are the values of $a$ and $b$ at the end of the above program fragment ? $a=0$ and $b=2$ $a=3$ and $b=2$ $a=2$ and $b=3$ $a=1$ and $b=5$ None of the above

answered Jul 6 in Programming by Arjun Veteran (416k points) | 169 views

+1 vote

1 answer

19

How Self-Referential Structure works?
I have learnt that self-referential structure is one which contains a structure of same type in it as an element. But I have a doubt regarding how that line is compiled successfully (i.e, how compiler knows how much space should be allocated and ... not yet finished? struct node { int data; struct node *next; }; correct me If I am wrong in understanding this.

answered Jul 5 in Programming by ravee_rocks (155 points) | 116 views

0 votes

2 answers

20

pointer airthmatic
we can subtract 2 pointer address then why we can't perform operations like addition, multiplication or division on pointer address??? any specific reason?

answered Jul 5 in Programming by ravee_rocks (155 points) | 68 views

+5 votes

1 answer

21

GATE1987-7a
List the invariant assertions at points $A, B, C, D$ and $E$ in program given below: Program division (input, output) Const dividend = 81; divisor = 9; Var remainder, quotient:interger begin (*(dividend >= 0) AND (divisor > 0)*) remainder := dividend; quotient := ... := remainder - divisor; (*C*) end; (*D*) quotient := quotient - 1; remainder := remainder + divisor; (*E*) end

answered Jul 4 in Programming by Arjun Veteran (416k points) | 264 views

0 votes

1 answer

22

MadeEasy Test Series: Programming & DS - Programming In C
Consider the following program segment int main ( ) { char ∗ str = GATECS ; printf ( %d , madeeasy (str)); return 0; } int madeeasy (int ∗ p1) { int ∗ p2 = p1; while (∗++p1); return (p1 - p2); } ... of data type int occupies 2 bytes. Is this question right because according to me types are not same when we pass argument inside madeeasy?

answered Jul 3 in Programming by Deepalitrapti Junior (813 points) | 126 views

+2 votes

1 answer

23

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 Jul 3 in Programming by srestha Veteran (113k points) | 111 views

+1 vote

0 answers

24

UGCNET-June-2019-II-21
Consider the following pseudo-code fragment in which an invariant for the loop is $m ^*x^k=p^n$ and $k \geq 0$ (here, $p$ and $n$ are integer variable that have been initialized): /* Pre-conditions : $p \geq 1 \wedge n \geq 0$ */ /* Assume that overflow never occurs ... */ } Which of the following must be true ar the end of the while loop? $x=p^n$ $m=p^n$ $p=x^n$ $p=m^n$

asked Jul 2 in Programming by Arjun Veteran (416k points) | 83 views

+1 vote

2 answers

25

Data structure Set 2-30
Meena is working in an IT company as HR manager. She has a large list of potential candidates to be recruited which are all sorted by their names. But she found that due to a bug in software 'O' was treated as '0' by the input ... is not correct. What would be the appropriate algorithm to correct the list of candidate profiles? Quick Sort Heap Sort Insertion Sort Merge Sort

answered Jun 20 in Programming by Ayon Mitra (179 points) | 160 views

0 votes

1 answer

26

GATE1988-2xiii
What is referential transparency?

answered Jun 15 in Programming by Satbir Boss (17.2k points) | 138 views

0 votes

1 answer

27

c-programming self doubt
#include<stdio.h> #include<stdlib.h> int main(void) { int maxLineCount = 500, maxCharCount = 500, index, j, count; char *line = NULL; size_t size; char *a[maxLineCount]; for (index = 0; index < maxLineCount; index++) a[index] = ... code is doing. suppose we have 3 string given as input in 3 different lines then how can we access each character of the string?

answered Jun 11 in Programming by piyush7rajput (35 points) | 123 views

+1 vote

2 answers

28

Array
Tell me the difference : &(arr+1) and &arr+1

answered Jun 9 in Programming by Rudr Pawan (45 points) | 224 views

+2 votes

2 answers

29

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 Jun 8 in Programming by Akanksha Agrawal (63 points) | 95 views

0 votes

2 answers

30

#userdefined Data type union in C
What is the output of the program? int main() { union a { int i; char ch[2]; }; union a u; u.ch[0] = 3; u.ch[1] = 2; printf("%d, %d, %d", u.ch[0], u.ch[1], u.i); return 0; }

answered Jun 8 in Programming by Akanksha Agrawal (63 points) | 70 views

0 votes

0 answers

31

Precision Field in printf with %s specifier
We know that UNIX support a feature that allows for variable field with precision. please help me out in this statement -> printf(“% * .* s \n”,w,d,string); ? i know using of precision with string such as %10.4s <width>.<precision> indicating that first four character to be printed in a field with 10 columns.

asked Jun 6 in Programming by Aks9639 (459 points) | 60 views

0 votes

4 answers

32

array pointers
What will the following code fragment output: void fun(int *a, int b) { b++; a[2] = a[1] + 3; } void main() { int A[5] = {0,1,2,3,4}; fun(A, A[2]); printf(%d, A[2]); }

answered Jun 6 in Programming by Sachin Yadav 4 (57 points) | 183 views

0 votes

1 answer

33

array of strings
#include <stdio.h> int main(void) { char* ar[4]; scanf("%s",ar[3]); printf("%s",ar[3]); return 0; } char *test1[3]= {"arrtest","ao", "123"}; if one can initialize array like this ,how can input be taken by using scanf ?

answered Jun 3 in Programming by Satbir Boss (17.2k points) | 96 views

0 votes

0 answers

34

Post Increment and pre incement
output is a=34 and x=13 can anyone plzz explain #include <iostream> using namespace std; int main() { int x = 10, a; a = x++ + ++x + x++; cout << "Post Increment Operation"; cout << "\na = " << a; cout << "\nx = " << x; return 0; } [closed]

asked May 30 in Programming by Arun Rout (109 points) | 38 views

+1 vote

2 answers

35

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 May 30 in Programming by shaktisingh (139 points) | 153 views

0 votes

1 answer

36

Made Easy Test Series:Programming
Consider the following C program #include<stdio.h> int main(){ char *arr={"GATE","CAT","IES","IAS","PSU","IFS"}; call(arr); return 0; } void call(char **ptr){ char **ptr1; ptr1=(ptr+=(sizeof(int)))-2; printf("%s",*ptr1); } Assume size of int pointer 4B.What will be output?

answered May 24 in Programming by Satbir Boss (17.2k points) | 98 views

0 votes

1 answer

37

Made Easy Test Series: Programming-Recursive and Iterative Program
$I=$Iterative Program $R=$ Recursive Program $(A)$ For every program belonging to class $I$, there is an equivalent program to class $R.$ $(B)$ Every program in $R$ uses strictly more stack space compared to equivalent program in $I.$ Among $(A)$ and $(B)$ which one is correct?

answered May 22 in Programming by Kaluti Loyal (5.4k points) | 17 views

0 votes

1 answer

38

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 May 21 in Programming by Kaluti Loyal (5.4k points) | 23 views

0 votes

1 answer

39

Made Easy Test Series:Programming in C
Consider the following $C$ implementation which when given $3$ numbers a,b,c as input, find the maximum of $3$ numbers $a,b,c.$ int kickstart(int a,int b,int c) { if(B1) return a; if(a>=b) return B2; return kickstart(c,a,b); } How the boxes filled up ... $a\geq c, B2:kickstart\left ( b,c,a \right );$ Is it $I) and II)$ or $I) and IV)$

answered May 21 in Programming by Satbir Boss (17.2k points) | 125 views

0 votes

0 answers

40

Self doubt Data structures
Implement Linked list using stack.

asked May 19 in Programming by shraddha priya Active (3.9k points) | 123 views

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