Recent questions and answers in Programming

+8 votes

2 answers

1

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 8 hours ago in Programming by Navneet singh (21 points) | 1.5k views

+36 votes

4 answers

2

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 8 hours ago in Programming by Navneet singh (21 points) | 5.8k views

+1 vote

2 answers

3

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 10 hours ago in Programming by Shagun Singh (233 points) | 141 views

+2 votes

2 answers

4

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 11 hours ago in Programming by Shagun Singh (233 points) | 274 views

+14 votes

12 answers

5

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 3 days ago in Programming by techbd123 Active (1.4k points) | 2.5k views

+14 votes

5 answers

6

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 4 days ago in Programming by JashanArora Junior (827 points) | 3.4k views

+12 votes

3 answers

7

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 4 days ago in Programming by ankitron (113 points) | 962 views

+25 votes

7 answers

8

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 4 days ago in Programming by techbd123 Active (1.4k points) | 4.9k views

+2 votes

2 answers

9

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 6 days ago in Programming by techbd123 Active (1.4k points) | 2.2k views

+34 votes

9 answers

10

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 Junior (827 points) | 8.3k views

+2 votes

3 answers

11

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 (233 points) | 125 views

+1 vote

3 answers

12

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 (233 points) | 196 views

+13 votes

3 answers

13

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 (1.4k points) | 2.6k views

+52 votes

7 answers

14

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 Junior (827 points) | 8k views

+39 votes

6 answers

15

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 Junior (827 points) | 7.7k views

+34 votes

4 answers

16

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 (1.4k points) | 6.4k views

+28 votes

6 answers

17

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 Junior (827 points) | 6.9k views

+26 votes

5 answers

18

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) | 2.6k views

+1 vote

1 answer

19

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 (151 points) | 54 views

+31 votes

5 answers

20

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 Junior (827 points) | 4.9k views

0 votes

1 answer

21

ISI2017-PCB-CS-2(a)
Write a complete ANSI C code using recursion to calculate the $sum(s)$ of the digits of an integer number (i) consisting of maximum 5 digits. For example, (1) = if $i=12345$, then your program should print $s=15$, (2) if $ i=457$, then $s=16$.

answered Oct 5 in Programming by !KARAN Active (2k points) | 23 views

+2 votes

4 answers

22

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 Oct 3 in Programming by Arnabh Gangwar (159 points) | 2.4k views

+4 votes

6 answers

23

GATE2019-24
Consider the following C program: #include <stdio.h> int main() { int arr[]={1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 5}, *ip=arr+4; printf(“%d\n”, ip[1]); return 0; } The number that will be displayed on execution of the program is _______

answered Oct 3 in Programming by Arnabh Gangwar (159 points) | 2.4k views

+7 votes

9 answers

24

GATE2019-27
Consider the following C program: #include <stdio.h> int r() { static int num=7; return num--; } int main() { for (r();r();r()) printf(“%d”,r()); return 0; } Which one of the following values will be displayed on execution of the programs? $41$ $52$ $63$ $630$

answered Oct 3 in Programming by Arnabh Gangwar (159 points) | 3.5k views

+67 votes

3 answers

25

GATE2014-2-11
Suppose $n$ and $p$ are unsigned int variables in a C program. We wish to set p to $^nC_3$. If $n$ is large, which one of the following statements is most likely to set p correctly? $p = n * (n-1) * (n-2) / 6;$ $p = n * (n-1) / 2 * (n-2) / 3;$ $p = n * (n-1) / 3 * (n-2) / 2;$ $p = n * (n-1) * (n-2) / 6.0;$

answered Sep 27 in Programming by JashanArora Junior (827 points) | 4.5k views

0 votes

3 answers

26

unary increment in c
if x=y=z=-1 then the values of x,y,z after ++x && ++y ||++z is shown as x=0,y=-1, and z=0 Please explain the reason behind this as I am not getting the reason of z=0.

answered Sep 22 in Programming by co3er (11 points) | 123 views

0 votes

2 answers

27

In Computer generally _________ expressions are preferred.
option : infix prefix or postfix which is rt?

answered Sep 21 in Programming by Daman86999 (11 points) | 261 views

0 votes

1 answer

28

Self doubt Data structures
Implement Linked list using stack.

answered Sep 15 in Programming by Akash Ghosh (357 points) | 141 views

+14 votes

3 answers

29

GATE2000-16
A recursive program to compute Fibonacci numbers is shown below. Assume you are also given an array $f [ 0\ldots m]$ with all elements initialized to $0.$ fib(n) { if (n > M) error (); if (n == 0) return 1; if (n == 1) ... values. Write the box number and the corresponding contents in your answer book. What is the time complexity of the resulting program when computing $fib(n)?$

answered Sep 15 in Programming by techbd123 Active (1.4k points) | 1.2k views

0 votes

1 answer

30

i want to read Tanenbaum Datastructure book. Can anyone tell me the source of pdf Tanenbaum Datastructure book ?

answered Sep 13 in Programming by Bikram Veteran (71.7k points) | 310 views

+1 vote

2 answers

31

pseudo code
int zap(int n) { if (n<=1) then zap =1; else zap = zap(n-3)+zap(n-1); } then the call zap(6) gives the values of zap Give the proper explanation

answered Sep 11 in Programming by shivam001 (419 points) | 131 views

+27 votes

11 answers

32

GATE2017-1-35
Consider the following two functions. void fun1(int n) { if(n == 0) return; printf("%d", n); fun2(n - 2); printf("%d", n); } void fun2(int n) { if(n == 0) return; printf("%d", n); fun1(++n); printf("%d", n); } The output printed when $\text{fun1}(5)$ is called is $53423122233445$ $53423120112233$ $53423122132435$ $53423120213243$

answered Sep 11 in Programming by shivam001 (419 points) | 5.1k views

+1 vote

2 answers

33

CMI2017-A-06
What does the following function compute in terms of $n$ and $d$, for integer values of $d$ ? Note that the operation $/$ denotes floating point division, even if the arguments are both integers. function foo(n,d){ if (d == 0){ return 1; }else{ if (d < 0){ return foo(n,d+1)/n; ... values of $d$. $n \times d$ if $d>0$ ,$n\div d$ if $d<0$. $n \times d$ for all the values of $d$.

answered Sep 11 in Programming by Ashwani Kumar 2 Boss (15.4k points) | 120 views

+5 votes

3 answers

34

GO2017-Programming-1-24
The output of the following C program will be (assume IEEE-754 floating point representation) #include <stdio.h> int main() { float a = 0.25; if(a == 0.25) printf("Hello"); printf(" World"); } Hello World World Compile Error Hello

answered Sep 9 in Programming by MRINMOY_HALDER Active (2.6k points) | 845 views

+20 votes

2 answers

35

GATE2005-IT-58
Let $a$ be an array containing $n$ integers in increasing order. The following algorithm determines whether there are two distinct numbers in the array whose difference is a specified number $S > 0$. i = 0; j = 1; while (j < n ){ if (E) j++; else if (a[j] - a[i] == S) break; else i++; } if ( ... $a[j] - a[i] > S$ $a[j] - a[i] < S$ $a[i] - a[j] < S$ $a[i] - a[j] > S$

answered Sep 8 in Programming by scholaraniket (245 points) | 1.7k views

+1 vote

1 answer

36

NPTEL CODING ASSIGNMENT
Consider a matrix M of integers. Divide M into 4 sub-matrices. These sub-matrices are called as Quadrants. Report the Quadrant number which has the smallest minimum-element. If two or more quadrants have same smallest minimum, report the smallest ... than 1 and less than 12 OUTPUT FORMAT: Print in a separate line, the quadrant number with the smallest minimum-element.

answered Sep 6 in Programming by ravi4407 (11 points) | 120 views

0 votes

1 answer

37

Dynamic Scoping

answered Sep 6 in Programming by nadeshseen (413 points) | 58 views

+4 votes

7 answers

38

GO2017-Programming-1-3
What will be the output of the following code? #include <stdio.h> #include <string.h> int main() { char string[] = "Hello"; if(sizeof(string) <= strlen(string)) printf("1"); printf("0"); } ______

answered Sep 4 in Programming by sat_27 (11 points) | 733 views

0 votes

1 answer

39

ISI2017-PCB-CS-2(b)
Write a $C$ program to fins all permutations of a string (having at most 6 characters). For example, a string of $3$ characters like $"abc"$ has 6 possible permutations: $”abc", "acb", "bca", "bac", "cab", "cba".$

answered Sep 1 in Programming by satya753 (103 points) | 57 views

+1 vote

2 answers

40

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 Aug 29 in Programming by amarsharma (39 points) | 160 views

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