Can I Reallocate memory using other function ??

Question

Can I Reallocate memory using other function in which memory is not allocated using malloc ??

Does this program will work fine ??

(It is not working properly in CxxDroid.
After Reallocation I'm getting empty string.
But after Reallocation in main function I'm getting correct result.)

But working in sololearn

https://code.sololearn.com/cGkqqGgnuvn4/?ref=app

Answer 1

Jazz
Oh! Yes!

You are right. I didn't noticed that string is now a local variable of rem function.
😅😅
Thank you!

Can you please tell me what is "char **string"

Answer 2

🌀 Shail Murtaza شعیل مرتضیٰ Here's a possible solution:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void rem(char **ptr);

int main() {
char *str = malloc(50);
strcpy(str, "Programmingm");
puts(str);
rem(&str);
puts(str);
}

void rem(char **ptr) {
int len = strlen(*ptr);
(*ptr)[len - 1] = 0;
if (!(ptr = realloc(*ptr, len + 1)))
puts("Reallocation Failed");
}

// Hope this helps

Answer 3

Why I'm getting segmentation Fault.
I guess returning new address is better choice.
https://code.sololearn.com/cYoVSb6w4ItH/?ref=app