Realloc in C language

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Muhammad Abdullah answered on February 14, 2021 Popularity 9/10 Helpfulness 2/10

answer Realloc in C language

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Realloc in C language

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#include <stdio.h>
#include <stdlib.h>
int main()
{
int *ptr = (int *)malloc(sizeof(int)*2);
int i;
int *ptr_new;
	
*ptr = 10;
*(ptr + 1) = 20;
	
ptr_new = (int *)realloc(ptr, sizeof(int)*3);
*(ptr_new + 2) = 30;
for(i = 0; i < 3; i++)
	printf("%d ", *(ptr_new + i));

getchar();
return 0;
}

Popularity 9/10 Helpfulness 2/10 Language c

Source: www.geeksforgeeks.org

Tags: c realloc

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Contributed on Sep 26 2022

Muhammad Abdullah

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c realloc

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/*prototype of realloc*/
void *realloc(void *ptr, size_t newsize);

/*use*/
dyn_array = realloc(dyn_array, (dyn_array_size + 1) * sizeof(int));

/*
	adds one more space to dyn_array
    you need stdlib.h for this
*/

Popularity 10/10 Helpfulness 4/10 Language c

Source: openbook.rheinwerk-verlag.de

Tags: c

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Contributed on Feb 14 2021

caluthan

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realloc in c

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#include <stdio.h>
int main () {
   char *ptr;
   ptr = (char *) malloc(10);
   strcpy(ptr, "Programming");
   printf(" %s,  Address = %u\n", ptr, ptr);

   ptr = (char *) realloc(ptr, 20); //ptr is reallocated with new size
   strcat(ptr, " In 'C'");
   printf(" %s,  Address = %u\n", ptr, ptr);
   free(ptr);
   return 0;
}

Popularity 10/10 Helpfulness 2/10 Language c

Source: www.guru99.com

Tags: c

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Contributed on Sep 03 2021

Smoggy Skipper

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C Syntax of realloc()

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ptr = realloc(ptr, x);

Popularity 9/10 Helpfulness 1/10 Language c

Source: Grepper

Tags: c syntax syn

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Contributed on May 28 2022

SAMER SAEID

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realloc in c

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-2

void *realloc(void *ptr, size_t size)

Popularity 10/10 Helpfulness 1/10 Language c

Source: Grepper

Tags: c

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Contributed on Apr 20 2021

Crazy Cowfish

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Realloc in C language

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