Recent activity by ykrishnay / GATE Overflow for GATE CSE

0 answers

1

DBMS -- Book Confusion
which is best book for DBMS korth or navathe ? since i know that both book is great but i wanted to follow 1 particular book that is easy to understand and simple language for all topics. please suggest .

which is best book for DBMS korth or navathe ?since i know that both book is great but i wanted to follow 1 particular book that is easy to understand and simple language...

573 views

commented Sep 7, 2022

1 answer

2

data structure and algorithms -- linked list -- size of a node
as we allocate the space for node in linked list using malloc() so how many bytes malloc allocate for the 1 node i.e. actual value of malloc allocates in ram like i write this code. so what is size of a node of linked ... node *)malloc(sizeof(struct node)); printf("%d",sizeof(struct node)); } what the printf prints and why ?

as we allocate the space for node in linked list using malloc() so how many bytes malloc allocate for the 1 node i.e. actual value of malloc allocates in ram like i write...

683 views

commented Aug 8, 2022

3 answers

3

Extern in C programming
int main() { extern int a = 20; printf("%d",a); } //why this gives error but followig code is not extern int a =20; int main() { printf("%d",a); } //why this happens that first code gives error but second is not ? //please tell i am realy confused now

int main(){extern int a = 20;printf("%d",a); }//why this gives error but followig code is not extern int a =20;int main(){printf("%d",a); } //why this happens that first ...

1.1k views

commented Jun 5, 2022

1 answer

4

C programming "extern" keyword
suppose i have 2 files //FILE1.h int var = 10; //FILE2.c #include<stdio.h> #include "FILE1.h" int main() { printf("%d",var); } so this file2.c gives output 10 so why we use extern keyword cause without ... work that is access the variable from other file is easily done without extern so what is exact use of extern keyword. thank you

suppose i have 2 files//FILE1.hint var = 10; //FILE2.c #include<stdio.h #include "FILE1.h" int main() { printf("%d",var); }so this file2.c gives output “10” so why we...

631 views

answer selected Jun 5, 2022

1 answer

5

Extern Variable in C
extern int var; int main(void) { var = 10; // why it is not considered as definition in prog return 0; } Why this is creating error saying (var is not defined).But as per rule -"by externing a variable we can use the variables anywhere in the program provided we know the declaration of them and the variable is defined somewhere."?

extern int var;int main(void){ var = 10; // why it is not considered as definition in prog return 0;}Why this is creating error saying (var is not defined).But as per ...

2.6k views

commented May 30, 2022

2 answers

6

C programming - Use of extern variable

3.6k views

commented May 30, 2022

1 answer

7

Gate books enquiry
I am preparing for gate 2020, can someone please guide me about which books/sources should I use for solving problems in Data structure and algorithms? And should I solve the questions from the Cormen book (introduction to algorithms) for the gate preparation? Thank you!

I am preparing for gate 2020, can someone please guide me about which books/sources should I use for solving problems in Data structure and algorithms? And should I solve...

637 views

commented May 30, 2022

1 answer

8

function
What is the difference between EXTERN keyword with function & EXTERN keword with variables ?

What is the difference between EXTERN keyword with function & EXTERN keword with variables ?

387 views

commented May 29, 2022

1 answer

9

Order Of Evaluation
What is the output generated by this code? main(){ int i=0; printf("%d %d %d %d %d %d %d", i++, ++i, i, i++, i, ++i, i++); } 4 4 3 2 2 2 0 4 5 5 2 5 5 0 0 2 2 2 2 4 4 Compiler Dependent

What is the output generated by this code?main(){ int i=0; printf("%d %d %d %d %d %d %d", i++, ++i, i, i++, i, ++i, i++); }4 4 3 2 2 2 04 5 5 2 5 5 00 2 2 2 2 4 4Compiler...

1.1k views

commented May 24, 2022

2 answers

10

what is the ouput of this c code ?
// C/C++ program to demonstrate return value // of printf() #include <stdio.h> int main() { long int n = 123456789; printf("While printing "); printf(", the value returned by printf() is : %d", printf("%ld" ... : 9 123456789 but this prints While printing 123456789, the value returned by printf() is : 9 why this is happens ?

// C/C++ program to demonstrate return value// of printf()#include <stdio.h>int main(){ long int n = 123456789; printf("While printing "); printf(", the value re...

675 views

comment edited May 24, 2022

1 answer

11

BEGINNER FRIENDLY BOOK FOR ALGORITHMS ?
I wanted to read ALgorithms by cormen but is it to complex to read for beginners ? or i read from other book ? please tell about the cormen is it easy to read for gate and PSU interviews ?

I wanted to read ALgorithms by cormen but is it to complex to read for beginners ? or i read from other book ?please tell about the cormen is it easy to read for gate and...

535 views

commented May 23, 2022

0 answers

12

What is stream in c programming ?
What is stream in c programming ? as i read file io in c programming so thats where i read “stream” word so what stream means ? thank you

What is stream in c programming ? as i read file io in c programming so thats where i read “stream” word so what stream means ? thank you

386 views

asked May 20, 2022

2 answers

13

Is "operating system three easy pieces" Book is enough for gate exam?
Is "operating system three easy pieces" Book is enough for gate exam? Or I read another book especially for GATE exam Please tell I am confused

Is "operating system three easy pieces" Book is enough for gate exam? Or I read another book especially for GATE exam Please tell I am confused

766 views

commented May 19, 2022

0 answers

14

C programming - code
what is the ouput of this code ? main() { int x = 10; int y = (++x) + (--x); printf(“%d”,y); } and i am confuse about this code specifically about this expression int y = (++x) + (--x); so if this expression is wrong so what the wrong about this expression and topic related to “Precedence and associativity”

what is the ouput of this code ?main(){int x = 10;int y = (++x) + ( x);printf(“%d”,y);} and i am confuse about this code specifically about this expression int y = (+...

274 views

asked Apr 27, 2022

1 answer

15

How to find a range of float,double,long in c programming?
How to find a range of float,double,long in c programming? just like we find the range in case of int (signed,unsigned),char (signed ,unsigned) in c programming language ? like integer unsigned range is 0 to 65535 and so on for other data types ? Thank you ahead

How to find a range of float,double,long in c programming? just like we find the range in case of int (signed,unsigned),char (signed ,unsigned) in c programming language ...

241 views

asked Apr 23, 2022

1 answer

16

GATEOVERFLOW QUESTION
what is join circle request in GO site and what is the advantage of this and what is the use of this and if i sent circle request to anyone ort accept the request from anyone what does means ?

what is join circle request in GO site and what is the advantage of this and what is the use of this and if i sent circle request to anyone ort accept the request from an...

553 views

commented Apr 21, 2022

1 answer

17

kenneth h rosen chapter 1 section 1.5 PRENEX NORMAL FORM in excercise 1.5
can this topic “PRENEX NORMAL FORM(PNF) ” is necsesary for gate or just i skip this topic.

can this topic “PRENEX NORMAL FORM(PNF) ” is necsesary for gate or just i skip this topic.

301 views

commented Apr 21, 2022

0 answers

18

Kenneth Rosen Edition 7 Exercise 1.5 Question 49 (Page No. 68)
Show that $\forall x P(x) \wedge \exists x Q(x)$ is logically equivalent to $\forall x \exists y (P(x) \wedge Q(y))$ ... from propositional variables,predicates,T, and F using logical connectives and quantifiers is equivalent to a statement in prenex normal form.

Show that $\forall x P(x) \wedge \exists x Q(x)$ is logically equivalent to $\forall x \exists y (P(x) \wedge Q(y))$, where all quantifiers have the same nonempty domain....

289 views

commented Apr 20, 2022

1 answer

19

Kenneth Rosen Edition 6th Exercise 1.5 Question 52 (Page No. 63)
Express the quantification $∃!xP (x)$,using universal quantifications, existential quantifications, and logical operators.?

Express the quantification $∃!xP (x)$,using universal quantifications, existential quantifications, and logical operators.?

900 views

commented Apr 20, 2022

0 answers

20

kenneth h rosen chapter 1 section 1.5 nested quantifiers excercise 1.5 question 48
Show that ∀xP (x) ∨ ∀xQ(x) and ∀x∀y(P (x) ∨ Q(y)), where all quantifiers have the same nonempty domain, are logically equivalent. (The new variable y is used to combine the quantifications correctly.)

Show that ∀xP (x) ∨ ∀xQ(x) and ∀x∀y(P (x) ∨ Q(y)),where all quantifiers have the same nonempty domain,are logically equivalent. (The new variable y is used to...

539 views

commented Apr 20, 2022

0 answers

21

kenneth h rosen chapter 1 section section 1.5 nested quatnifiers excercise 49
49. a) Show that ∀xP (x) ∧ ∃xQ(x) is logically equivalent to ∀x∃y (P (x) ∧ Q(y)), where all quantifiers have the same nonempty domain. b) Show that ∀xP (x) ∨ ∃xQ(x) is equivalent to ∀x∃y (P (x) ∨ Q(y)), where all quantifiers have the same nonempty domain. please anybody tell how to prove this logical equivalency ?

49. a) Show that ∀xP (x) ∧ ∃xQ(x) is logically equivalentto ∀x∃y (P (x) ∧ Q(y)), where all quantifiers havethe same nonempty domain.b) Show that ∀xP (x) ∨...

376 views

asked Apr 20, 2022

0 answers

22

kenneth h rosen chapter 1 section nested quantifers excercise 1.5 question 40
Find a counterexample, if possible, to these universally quantified statements, where the domain for all variables consists of all integers. a) ∀x∃y(x = 1/y) b) ∀x∃y(y^2 − x < 100)

Find a counterexample, if possible, to these universallyquantified statements, where the domain for all variablesconsists of all integers.a) ∀x∃y(x = 1/y)b) ∀x∃y(...

340 views

asked Apr 19, 2022

0 answers

23

Kenneth Rosen Edition 6th Exercise 1.4 Question 35 (Page No. 61)
Find a common domain for the variables x, y, z, and w for which the statement $∀x∀y∀z∃w((w \neq x) ∧ (w \neq y) ∧ (w \neq z))$ is true and another common domain for these variables for which it is false.

Find a common domain for the variables x, y, z,and w for which the statement $∀x∀y∀z∃w((w \neq x) ∧ (w \neq y) ∧ (w \neq z))$ is true and another common dom...

704 views

commented Apr 18, 2022

0 answers

24

kenneth h rosen chapter 1 section 1.5 nested quantifers question 34
Find a common domain for the variables x, y, and z for which the statement ∀x∀y((x = y) → ∀z((z = x) ∨ (z = y))) is true and another domain for which it is false.

Find a common domain for the variables x, y, and zfor which the statement ∀x∀y((x = y) → ∀z((z = x) ∨(z = y))) is true and another domain for which it is false....

264 views

asked Apr 18, 2022

0 answers

25

kenneth h rosen chapter 1 section "Nested quantifers" excercise 1.5 question 26's g
Let Q(x, y) be the statement “x + y = x − y.” If the do- main for both variables consists of all integers, what are the truth values? g) ∃y∀xQ(x, y) Basically i done all the subquestions (a,b,c,d,e,f,h,i) from this question but confused in g subquestion please give answer

Let Q(x, y) be the statement “x + y = x − y.” If the do-main for both variables consists of all integers, what arethe truth values?g) ∃y∀xQ(x, y)Basically i don...

200 views

asked Apr 18, 2022

0 answers

26

kenneth h rosen chapter 1 section 1.5 excercise 1.5 question 18 e
Express each of these system specifications using predi- cates, quantifiers, and logical connectives, if necessary. e) No one knows the password of every user on the sys- tem except for the system administrator, who knows all passwords.

Express each of these system specifications using predi-cates, quantifiers, and logical connectives, if necessary. e) No one knows the password of every user on the sys-t...

322 views

asked Apr 16, 2022

0 answers

27

kenneth h rosen chapter 1 section 1.5 nested quantifiers excercise no 17, b
Express each of these system specifications using predi- cates, quantifiers, and logical connectives, if necessary. b)There is a process that continues to run during all error conditions only if the kernel is working correctly.

Express each of these system specifications using predi-cates, quantifiers, and logical connectives, if necessary.b)There is a process that continues to run during all er...

191 views

asked Apr 16, 2022

2 answers

28

Kenneth H. Rosen
Let F(x, y) be the statement “x can fool y,” where the domain consists of all people in the world. Use quantifiers to express each of these statements. (a) There is exactly one person whom everybody can fool. (b) There is someone who can fool exactly one person besides himself or herself.

Let F(x, y) be the statement “x can fool y,” where thedomain consists of all people in the world. Use quantifiersto express each of these statements.(a) There is exac...

1.5k views

commented Apr 13, 2022

1 answer

29

Kenneth H. Rosen
Let L(x, y) be the statement “x loves y,” where the domain for both x and y consists of all people in the world. Use quantifiers to express each of these statements. There is exactly one person whom everybody loves. There are exactly two people whom Lynn loves.

Let L(x, y) be the statement “x loves y,” where the domain for both x and y consists of all people in the world. Use quantifiers to express each of these statements.T...

1.2k views

comment edited Apr 12, 2022

0 answers

30

Kenneth h rosen chapter 1 section 1.5 nested quantifiers

158 views

asked Mar 25, 2022

tags	tag:apple
author	user:martin
title	title:apple
content	content:apple
exclude	-tag:apple
force match	+apple
views	views:100
score	score:10
answers	answers:2
is accepted	isaccepted:true
is closed	isclosed:true