Recent questions in Programming

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1

Self Doubt
1. #include <stdio.h> int main() { int i; char a[] = ""; // no tab space in between if(printf("%s",a)) printf("string empty"); else printf("string is not empty"); return 0; } Output: string is not empty 2. ... ;,a)) printf("string empty"); else printf("string is not empty"); return 0; } Output: string empty Why and how so?

asked Apr 1, 2019 in Programming by Reshu $ingh (259 points) | 54 views

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2 answers

2

Made Easy Workbook
#include <stdio.h> int main() { int i = 258; int *iptr = &i; printf("%d",*(char*)iptr); printf("%d",*(char*)iptr+1); } Please explain the solution.

asked Mar 31, 2019 in Programming by Reshu $ingh (259 points) | 120 views

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3

CLRS CHAPTER 25
FOR THE EXTENDED-SHORTEST-PATH if we want to find the distance between 1->4 and the 1->5 +5->4 gives the shortest path and if 1->5 gets its shortest path as 1->2->5 and 5>4 gets its shortest path as 5->3->4 then how will we get it?? as one of the operands is always from the initial array.

asked Mar 30, 2019 in Programming by Doraemon Junior (787 points) | 22 views

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4

self doubt
A directed acyclic graph has no connected components. TRUE OR FALSE???

asked Mar 30, 2019 in Programming by Doraemon Junior (787 points) | 21 views

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5

self doubt
For multiplication method in hashing the formula is h(k)=m* (KA mod 1); m=2^p, k=key , 0<A<1 My question is how does it actually works. Please explain in a detailed way.

asked Mar 29, 2019 in Programming by Doraemon Junior (787 points) | 15 views

+1 vote

2 answers

6

c functions
#include <stdio.h> void demo() { printf("GeeksQuiz "); } int main() { demo(); return 0; } ****************************************************************************** #include <stdio.h> int main() { demo(); return 0; } void demo() { printf("GeeksQuiz "); } will both program same result?

asked Mar 29, 2019 in Programming by hitendra singh Active (1.7k points) | 74 views

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7

Allen Career Institute:Programming
Do something (x, n) { m = n, temp = 1, z = x ; while (m > 0) do { while ((m mod z) == 0) do { m = |m/2|; z = z^{2} ; } m = m – 1; } return temp ; } Complexity of the above problem $1)\Theta \left ( log n \right )$ $2)\Theta \left ( nlog n \right )$ $3)\Theta \left (n^{2} \right )$ $4)\Theta \left (n\right )$

asked Mar 28, 2019 in Programming by srestha Veteran (119k points) | 100 views

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1 answer

8

Pointer question-C
Anyone kindly tell the reason why the outputs are differ ? #include<stdio.h> int main() { char *ptr = "geeksforgeeks"; printf("%c\n", *&*&*ptr); getchar(); return 0; } Output-g #include<stdio.h> int main() { char *ptr = "geeksforgeeks"; printf("%s\n", *&*&ptr); getchar(); return 0; } Output-geeksforgeeks

asked Mar 24, 2019 in Programming by val_pro20 Active (1.2k points) | 119 views

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1 answer

9

Self Doubt on scoping
int x = 5, y = 10 ; void main ( ) { int i = 2, j = 3 A (i, j); } void A (int i, int j) { int x = 10, y = 5 ; i = i + x : j = i + y : printf ("%d %d", i, j); B (i, j); } void B (int i, int j) { i ... by-name 3. call-by-need 4. call-by-value 5.Static scoping 6.Dynamic scoping Any reference for call by name and call by need Is for static coping $12,17,54$ or $12,17,59$?

asked Mar 23, 2019 in Programming by srestha Veteran (119k points) | 65 views

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0 answers

10

about array size
#include <stdio.h> // Note that arr[] for fun is just a pointer even if square // brackets are used void fun(char arr[]) // SAME AS void fun(int *arr) { unsigned int n = sizeof(arr)/sizeof(arr[0]); printf("\nArray size inside fun() is ... ********** output is confusing : need explaination how is it happening Array size inside main() is 6 Array size inside fun() is 8

asked Mar 23, 2019 in Programming by hitendra singh Active (1.7k points) | 78 views

0 votes

1 answer

11

self doubt variable scope
#include <stdio.h> /* global variable declaration */ int g = 20; int main () { /* local variable declaration */ int g ; printf ("value of g = %d\n", g); return 0; } why this printing value of g is 0 instead of garbage because g is declared which is local variable in main function. are variables inside main function by default global?

asked Mar 17, 2019 in Programming by Ram Swaroop Loyal (5.3k points) | 93 views

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0 answers

12

Geeks for Geeks : C Program
In the above 4 Statements which would print 123 as output ? Explain also.

asked Mar 16, 2019 in Programming by Ashish Roy 1 (167 points) | 164 views

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1 answer

13

Self Doubt
For creating a N integer array is there any mistake in this line? int numArray[N]=(int *) malloc(N);

asked Mar 12, 2019 in Programming by srestha Veteran (119k points) | 90 views

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0 answers

14

Programming in C: Find the Output of function call A(6). Please explain the approach for such questions [closed]

asked Mar 10, 2019 in Programming by Nishi Agarwal (119 points) | 124 views

+1 vote

1 answer

15

#operator precedence and associativity
#include<stdio.h> int x = 0; int f1() { x = 5; return x; } int f2() { x = 10; return x; } int main() { printf("%d \n", f1()); printf("%d \n", f2()); int p = f1() + f2(); printf("%d ", x); return 0; } what is the output when int p= f1()+f2(); is called and how this is came?????? thank you…!

asked Mar 10, 2019 in Programming by shiva0 (171 points) | 126 views

+2 votes

1 answer

16

Programming in C: What is the output of program? Explain for all the statements
int main() { int m=44; int*p=&m; int &r=m; int n=(*p)++; int *q=p-1; r=--*(p)+1; ++*q; printf("m=%d n=%d r=%d",m,n,r); return 0; } Options: m=44,n=46,r=45 m=45,n=44,r=45 m=46,n=44,r=46 m=46,n=43,r=46

asked Mar 10, 2019 in Programming by Nishi Agarwal (119 points) | 198 views

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1 answer

17

What is the output of program?
void f(int x,int &y,const int &z) {x+=z; y+=z; } int main() { int a=22,b=33,c=44; f(a,b,c); f(2*a-3,b,c); printf("a=%d b=%d c=%d",a,b,c); return 0; }

asked Mar 10, 2019 in Programming by Nishi Agarwal (119 points) | 92 views

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2 answers

18

Programming in C : what is the value of x?
int x=0,i; for(i=0;i<10;i++) if(i%2 && x++) x+=2; Options: a: 11 b:13 c:15 d:17 [closed]

asked Mar 9, 2019 in Programming by Nishi Agarwal (119 points) | 105 views

+1 vote

0 answers

19

ACE test Series: Programming and DS-Programming
void find(int x){ static int i=10,y=0; y=y+i; for(i;i>0;i=i-10){ if(x!=0) find(x-1); else{ printf("%d",y); } } } What will be output printed for find(4)?

asked Mar 6, 2019 in Programming by srestha Veteran (119k points) | 146 views

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0 answers

20

ACE Test Series:Programming in C
#include <stdio.h> int main(void) { char s1[15]="SREE"; char s2[10]="ALL THE BEST"; strcpy(s2,s1); printf("\n%s",s2); return 0; } 1)How s2 will contain a string of size 12, while it only contain ... copying , I mean SREETHE BEST Will it work like pointer that s2 pointing to same as s1? Anything link good to read about strcpy

asked Mar 5, 2019 in Programming by srestha Veteran (119k points) | 96 views

+2 votes

0 answers

21

ACE Test Series: Programming in C
What will be output of the program? int d=0; int f(int a,int b){ int c; d++; if(b==3) return a*a*a; else{ c=f(a,b/3); return(c*c*c); } } int main(){ printf("%d",f(4,81)); return 0; }

asked Mar 5, 2019 in Programming by srestha Veteran (119k points) | 172 views

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0 answers

22

Locality of Rference(OS+DS) (ACE)
An OS uses virtual memory with paging technique for memory allocation. Which of the following searching technique on given data structure use locality of reference? Linear search on linked list Binary search on array Linear search on array Binary search on linked list

asked Mar 2, 2019 in Programming by srestha Veteran (119k points) | 103 views

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2 answers

23

Programming Stack (ACE)
Runtime stack doesnot contain (A) Local variables (B) Static Variables (C) Parameter Passed (D) Return Address

asked Mar 1, 2019 in Programming by srestha Veteran (119k points) | 151 views

0 votes

1 answer

24

Programming doubt(ACE)
void print(int i){ static int x=4; if(i!=0){ print(--x); } printf("%d",x); } What will be output printed for print(10)? Will it print value as call by value or call by reference?

asked Mar 1, 2019 in Programming by srestha Veteran (119k points) | 110 views

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1 answer

25

assignment
Following C program is written to find the pairs of elements in an array whose sum is 9. The for loop will iterate over the array of size 7. The program will print the correct pairs (whose sum is 9) on iteration number a' and b'. What are the values of a' and b'? Note: for 1st iteration, i=0. For 2nd ... sum = 9; int A[7]={1,4,3,3,5,2,6}; pair(A,7,sum); } 1. 5,7 2. 2,5 3. 4,6 4. 2,3

asked Feb 28, 2019 in Programming by Arun Rout (117 points) | 89 views

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0 answers

26

#programming
https://www.sanfoundry.com/c-program-checks-strings-anagrams/ what is the meaning of line number 32?

asked Feb 19, 2019 in Programming by himgta Active (3.7k points) | 62 views

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0 answers

27

how to generalize the number of trees intersection between preorder and postorder

asked Feb 18, 2019 in Programming by teja1521 (183 points) | 21 views

+1 vote

1 answer

28

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.

asked Feb 18, 2019 in Programming by himgta Active (3.7k points) | 131 views

+1 vote

2 answers

29

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

asked Feb 17, 2019 in Programming by Ahsanul Hoque (195 points) | 267 views

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0 answers

30

Why do we typecast malloc()?

asked Feb 17, 2019 in Programming by teja1521 (183 points) | 73 views

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