Recent questions tagged pointers / GATE Overflow for GATE CSE

7 votes

2 answers

1

GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 33
On a $64$-bit system, which of the following C expressions is equivalent to the C expression $(x[2]+4)[3]?$ Assume $\mathrm{x}$ is declared as $\textsf{int}\ast \ast \textsf{x}$ $\ast((*(x+16))+28)$ $\ast((*(x+2))+7)$ $\ast(((* x)+2)+7)$ $(* \ast(x+2)+7)$

On a $64$-bit system, which of the following C expressions is equivalent to the C expression $(x +4)[3]?$ Assume $\mathrm{x}$ is declared as $\textsf{int}\ast \ast \text...

GO Classes

453 views

GO Classes asked Feb 5

1 votes

1 answer

2

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 27
Consider the following C program:- #include <stdio.h> void ubswap(int **a, int **b) { int* temp = *a; *a = *b; *b = temp; } int main() { int x = 1, y = 9; int* u = &x; int* v = &y; int** a = &u; int** b ... $\text{ return 0 }?$ $x$ and $y$ $u$ and $v$ $a$ and $b$ None of the above

Consider the following C program:-#include <stdio.h void ubswap(int a, int b) { int* temp = *a; *a = *b; *b = temp; } int main() { int x = 1, y = 9; int* u = &x; int* v...

GO Classes

489 views

GO Classes asked Jan 21

1 votes

1 answer

3

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 22
What will the following print: int a, b, c, *d; a = 0; b = 1 ; c = 2 ; d = & a; (*d) += b+c; d = & b; (*d) += a+b+c ; printf("a= %i b=%i\n", a, b); $a=0, b=3$ $a=3, b=3$ $a=3, b=4$ $a=3, b=7$

What will the following print:int a, b, c, *d; a = 0; b = 1 ; c = 2 ; d = & a; (*d) += b+c; d = & b; (*d) += a+b+c ; printf("a= %i b=%i\n", a, b);$a=0, b=3$$a=3, b=3$$a=3...

GO Classes

419 views

GO Classes asked Jan 13

0 votes

0 answers

4

ISRO2020-62
#include int main() { int x; char *ptr; x=622,100,101; printf("%d",(*(char *)&x)*(x%3)); return 0; } In this question what is the meaning of “ *(char *)&x “ ? please explain it.

#includeint main(){ int x;char *ptr;x=622,100,101;printf("%d",(*(char *)&x)*(x%3));return 0; }In this question what is the meaning of “ *(char *)&x “ ? please ...

Ray Tomlinson

887 views

Ray Tomlinson asked Jul 5, 2023

0 votes

1 answer

5

Pointer, Address
For arrays with more given elements than its size, why does doing a[i] print garbage value but *a+i brings the correct value, despite them being the same thing (a[i] = *a+i) int a[2] = {1,2,3,4}; for ( int i =0 ; i<=4 ;i++){ printf(“%d” , a[i]; // gives 1, 2, Garbage , Garbage printf(“%d”, *a+i; // gives 1, 2, 3, 4 }

For arrays with more given elements than its size, why does doing a[i] print garbage value but *a+i brings the correct value, despite them being the same thing (a[i] = *a...

Mrityudoot

688 views

Mrityudoot asked Apr 24, 2023

2 votes

2 answers

6

#Pointers #Pointer_initialization
Why can’t we do pointer initialization as int *p; *p=x; instead of p = &x; ?

Why can’t we do pointer initialization as int *p; *p=x; instead of p = &x; ?

Mrityudoot

296 views

Mrityudoot asked Apr 23, 2023

3 votes

1 answer

7

Pointers
Please explain this question void main() { int a =300; char *ptr = (char*) &a ; ptr++; *ptr=2; printf("%d" , a); }

Please explain this question void main() { int a =300; char *ptr = (char*) &a ; ptr++; *ptr=2; printf("%d" , a); }

Storm_907

470 views

Storm_907 asked Apr 16, 2023

0 votes

1 answer

8

physics wallah dpp

_Harshit

745 views

_Harshit asked Mar 18, 2023

0 votes

0 answers

9

TestBook testseries TLB and C programming combined question
Consider the following C function executed in an OS with paging where the page size is 4 kilobytes. Further, assume that the system employs a 32-entry direct mapped TLB. int *alloc_and_init() { int counter, value=0, size=2048; int ... of the program, what is the number of TLB misses during the execution of the for loop? 0 1 2048 2

Consider the following C function executed in an OS with paging where the page size is 4 kilobytes. Further, assume that the system employs a 32-entry direct mapped TLB.i...

Sahil_Lather

216 views

Sahil_Lather asked Jan 28, 2023

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