Recent questions and answers in Programming - GATE CSE Doubts

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GATE2005-IT Qstn no 53
In the expression count[b[j++]]−− two post operations are present ,In which order will they be evaluated? [Ignore any array out of bound errors and count is an array of integers]

asked 2 days ago in Programming by deCiFer598 (5 points) | 13 views

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Self Doubt Algorithms
what is time complexity to insert a node based on key in a priority queue? O(nlogn) O(logn) O(n) (n2) i am unable to get the meaning of the question . is it a simple insertion in the priority queue?? . what is the meaning of “based on key”.Please explain this….

asked Oct 20 in Programming by manal jain (5 points) | 15 views

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C programming self doubt
int a=14; a=a++; Why is the final output of a is 14 and not 15? Since post operator is used so first the value 14 will be assigned to “a” and then “a” will get incremented to 15.So final value should be 15.But why it is coming output as 14?

asked Oct 19 in Programming by vishal burnwal (65 points) | 26 views

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Made Easy test series
Why option A is wrong?

answered Oct 17 in Programming by mayureshpatle (855 points) | 33 views

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Self Doubt - Scope, Binding and Abstract Data type In Gate 2021 Syllabus?

asked Oct 17 in Programming by satvik (11 points) | 10 views

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Made Easy Test Series
Why Stack S will contain only e?and what does it mean by S=tmp here?

asked Oct 17 in Programming by Sinchit (15 points) | 27 views

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i want to know the difference between below 2 programs

answered Oct 16 in Programming by mayureshpatle (855 points) | 31 views

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Self Doubt (Call-by-Need)
https://gateoverflow.in/960/gate2003-73 In this question it is said that Call-by-Need works the same way as Call-by-Name with the difference that the evaluation of the parameter reference is done the first time it is encountered in the called function. global int ... will be calculated and saved as 3 and rest of the time x = 3 will only be used producing the output 31 3?

asked Oct 12 in Programming by Mellophi (333 points) | 16 views

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Is the size of data types machine dependent?
Most of the time questions are asked like: printf("%ul,%ul,%ul", sizeof(char), sizeof(float),sizeof(int)); If sizes of data types are machine dependent then how can this type of questions be answered?

asked Oct 10 in Programming by ankit_thawal (5 points) | 11 views

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static variable #self doubt
What will be the output of following program:void Fun(void); main() { static int a=1; Fun(); a+=1; Fun(); printf(" %d \n",a); } void Fun() { static int a=2; int b=1; a+=++b; }

answered Oct 9 in Programming by iarnav (231 points) | 24 views

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2 answers

Made Easy 2021
What would be the answer? I got 32, but it’s wrong.

answered Oct 9 in Programming by Shashank Rustagi (513 points) | 50 views

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#DS #Heap #Tournament
Number of comparisons to find Minimum, max, second min, second max of an array of 100 elements. As per my understanding, Minimum : 99 (n-1) Max : 49(n/2-1) second max : log49-1

answered Oct 9 in Programming by Shashank Rustagi (513 points) | 47 views

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Self Doubt - Gate 2021 syllabus
Is Parameter passing technique in gate 2021 syllabus?

answered Oct 4 in Programming by SarathBaswa (337 points) | 40 views

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Made Easy Test Series
Select the incorrect statement. Binary search trees (regardless of the order in which the values are inserted into the tree): a. Always have multiple links per node. b. Can be sorted efficiently. c. Always have the same shape for a particular set of data. d. Are nonlinear data structures. How a is right? ANS: c. Always have the same shape for a particular set of data

answered Oct 4 in Programming by Shashank Rustagi (513 points) | 31 views

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Following C code why it is correct to use graph->array[i].head and graph->array[i]->head gives error?

asked Sep 25 in Programming by shashank023 (5 points) | 14 views

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geeksforgeeks
#include <stdio.h> int main() { void demo(); void (*fun)(); fun = demo; (*fun)(); fun(); return 0; } void demo() { printf("GeeksQuiz "); } what will be its output and please explain as well!

answered Sep 23 in Programming by srestha (1k points) | 46 views

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p&ds(madeeasy subjectwise test)
In this last statement printf(“ \n %d %d “,s,t ) ; s value should be printed as 2 beacuse in the statement t= p + q+ s++ , s is post incremented so its value is incremented next statement but the sol gives value of s=2. What is the approach ?

asked Sep 22 in Programming by nitin21038 (9 points) | 27 views

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Geeksforgeeks
You are given a list of 5 integers and these integers are in the range from 1 to 6. There are no duplicates in list. One of the integers is missing in the list. Which of the following expression would give the missing number. ^ is bitwise XOR operator. ~ is bitwise NOT operator. Let elements of list can ... [4] ^ 1 ^ 2 ^ 3 ^ 4 ^ 5 D ~(list[0] ^ list[1] ^ list[2] ^ list[3] ^ list[4])

asked Sep 21 in Programming by Musa (5 points) | 10 views

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Gate 2000 computer science
Which of the following is the best choice as m in the hash function h(k) = k mod m ? 61 701 81 1031

asked Sep 19 in Programming by Shaonli (5 points) | 17 views

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2 answers

madeeasy topicwise
A 3-ary tree in which every internal node has exactly 3 children. The number of leaf nodes in such a tree with 10 internal nodes will be _____

answered Sep 14 in Programming by Mellophi (333 points) | 36 views

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1 answer

Made easy test series GATE 2021
Consider a two dimensional array A[0-39,0-39] in lower triangular matrix representation . The size of each element in the array is 1 byte. If the array is implemented in the memory in the form of row major order and base address of the array is 500. The address of A[15][25] will be [closed]

answered Sep 13 in Programming by Ehraz Hasan (366 points) | 36 views

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Made easy test series GATE 2021
consider the following function signatures for passing a 2 dimensional array A of 10 rows and 10 columns to a function xyz() in C. xyz(int A[ ]) xyz(int *A[ ]) xyz(int A[ ] [10]) xyz(int A[10] [ ]) The number of correct function signatures are?

asked Sep 13 in Programming by Nishinoya (5 points) | 21 views

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quicksort sorting
I am getting a segmentation fault at line 12. when i tried to print temp it went in infinite loop. (si-start index, ei-end index) ; using namespace std; #include<iostream> void partition(int arr[],int si,int ei) { int i,count=0, temp; for(i=si+1;i<=ei;i++) { if(arr[ ... ) { cin>>arr[i]; } quicksort(arr,0,n-1); for(i=0;i<n;i++) { cout<<arr[i]; } return 0; }?

asked Sep 13 in Programming by jaskiran (5 points) | 37 views

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topictest-madeeasy
no of digits in n integer part of logarithm of n base 2 fn always return 0 n/2 the sol is given as b) but I am getting a) as the answer

asked Sep 12 in Programming by nitin21038 (9 points) | 32 views

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1 answer

Made easy theory book, Self doubt in pointers.
Here in this question answer is option a. But I think it would be option c please clear my doubt with proper explanation.

answered Sep 12 in Programming by Ehraz Hasan (366 points) | 32 views

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Made easy theory, Self doubt in pointers
#include<stdio.h> int main() { char *p1="Graduate"; char *p2=p1; printf("%c",*++p2); printf("%d",sizeof(p2)); return 0; }

asked Sep 11 in Programming by sarthakdarji (9 points) | 52 views

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Self doubt in programming, made easy theory book

asked Sep 11 in Programming by sarthakdarji (9 points) | 25 views

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1 answer

Self Doubt - Pointers
Is occurrence of segmentation fault in case of uninitialized pointers compiler dependent ?

answered Sep 9 in Programming by kaleen bhaiya (9 points) | 34 views

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Understanding pointers in C (Yashavant Kanetkar)
Can anyone please provide the output of the below code with proper explanation:- #include <stdio.h> show(int(*q)[3][4],int ii,int jj,int kk){ int i,j,k; int *p; for(i=0;i<ii;i++){ for(j=0;j<jj;j++){ p=q[i][j]; printf("\nThis is %d\n",q[i][ ... 7,8, 9,3,2,1}, { 2,3,5,7, 4,3,9,2, 1,6,3,6} }; show(a, 2, 3,4 ) ; } Thanks in advance.

asked Sep 9 in Programming by Pratyush Priyam Kuan (1.1k points) | 41 views

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1 answer

Self doubt:Programming
What will be meaning of printf("%d",--*p); will return? I mean if ‘p’ pointing some address, will --*p decrement on the address or it will decrement the value of that address?

answered Sep 6 in Programming by himanshu2021 (127 points) | 55 views

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Programming :ME
#include<stdio.h> int main(){ int i=500; int *p=&i; foo(&p); printf("%d",*p); return 0; } void foo(int **p1){ int j=2; *p1=&j; printf("%d",**p1); } My doubt what happen when double pointer working as single pointer? *p1=&j in 11th line? Will it work like single pointer? And what will be the output?

asked Sep 6 in Programming by srestha (1k points) | 37 views

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Self doubt: Programming
#include <stdio.h> int main(void) { char a[20]="GATE 2021"; char *p1; p1=a+2; while((*p1++)&&(*p1!=NULL)){ (*p1)++; } printf("%s",a); return 0; } Will ASCII value of T increment? if not, why not??

asked Sep 5 in Programming by srestha (1k points) | 53 views

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Made easy theory book,Self doubt in Hashing Techniques

asked Sep 5 in Programming by sarthakdarji (9 points) | 20 views

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1 answer

Gate Zeal Question
[closed]

answered Sep 4 in Programming by dhruvhacks (5 points) | 76 views

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1 answer

Gate Zeal Question
#include <stdio.h> int main(){ char a[] = "GATEATZEAL"; char b[20]; char *ps, *pt; ps = a; pt = b; while(*pt){ *pt++=*ps++; } *pt = '\0'; printf("%s\n",b); return 0; } What is the output? P.S – I compiled on 6 different compilers and 5 gave GATEAT one gave GAT I have no idea how. Please explain.

answered Sep 3 in Programming by Shashank Rustagi (513 points) | 35 views

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1 answer

Gate Applied
how will i know that: if(a[i][j]<k) k=a[i][j];//it is inside for loop printf("%d",k);//this is outside for loop without indentation, cause all statements here have same indentation.

answered Sep 1 in Programming by himanshu2021 (127 points) | 22 views

+2 votes

1 answer

Programming:ME
#include<stdio.h> main() { static char *s[]={"madeeasy","online","test”,"series"}; char **ptr[]={s+3,s+2,s+1,s},***p; p=ptr; ++p; printf("%s",*--*++p+3); } What will be printed as output?

answered Sep 1 in Programming by KUSHAGRA गुप्ता (1.4k points) | 55 views

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2 answers

why is the output of the following code 20?
#include<stdio.h> int main() { int y = 7; int z = (--y) + (y=10); printf("%d",z); return 0; } value must be 19 because of the pre-decrement operation. i dont understand why is it 20 ?

answered Aug 31 in Programming by himanshu2021 (127 points) | 44 views

+1 vote

2 answers

Programming doubt:ME
main(){ void fun(); fun(); fun(); } void fun(){ static int i=1; auto int j=5; printf("%d",(i++)); printf("%d",(j++)); } What will be output for this code?

answered Aug 31 in Programming by suvradip das (113 points) | 35 views

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1 answer

Made Easy Topic Wise

answered Aug 31 in Programming by suvradip das (113 points) | 97 views

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