pointer

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

678 views

Mrityudoot asked Apr 24, 2023

Programming in C
programming-in-c
pointers

+ –

1 votes

2 answers

Souvik33 asked Nov 28, 2022

629 views

Malloc | Free | Dangling Pointer | Prog. & DS
MSQ Consider the following C snippet: #include <stdio.h> int main() { int *ptr = (int*) malloc(100*sizeof(int)); *ptr=33; printf("%d %d\n",ptr,*ptr); // Line X free(ptr); *ptr=37; printf("%d %d\n",ptr,* ... *ptr) is 0 as in Line Y, the allocated heap is freed, and we cannot update it anymore, as ptr is now a dangling pointer

MSQ Consider the following C snippet:#include <stdio.h int main() { int *ptr = (int*) malloc(100*sizeof(int)); *ptr=33; printf("%d %d\n",ptr,*ptr); // Line X free(ptr); *...

Souvik33

629 views

Souvik33 asked Nov 28, 2022

Programming in C
data-structures
pointers
programming-in-c

+ –

1 votes

2 answers

val_pro20 asked Mar 24, 2019

1,470 views

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

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;}Outp...

val_pro20

1.5k views

val_pro20 asked Mar 24, 2019

Programming in C
programming-in-c
pointers

+ –

0 votes

1 answer

Gurdeep Saini asked Feb 1, 2019

635 views

is it dangling pointer
is it dangling pointer ? int main(void) { int* p; printf("%d",*p); return 0; } https://ideone.com/IN77el

is it dangling pointer ?int main(void) { int* p;printf("%d",*p); return 0;} https://ideone.com/IN77el

Gurdeep Saini

635 views

Gurdeep Saini asked Feb 1, 2019

Programming in C
pointers
programming-in-c

+ –

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According to this the size of a pointer is platform dependent

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