CODEWITHSUNDEEP
c
PatrykTraveler
PatrykTraveler

Reputation: 105

Dynamic allocation of string array using void pointer

The problem is as follows. I have a void pointer and I want to allocate string array with that. Is it possible to cast void* to char** like this:

void* ptr = (char**)calloc(size, sizeof(char*))

and then allocate each row of that table? I'm currently running out of ideas.

Upvotes: 0

Views: 188

Answers (1)

Jim Gorski
Jim Gorski

Reputation: 390

Psuedo Code that should get you what you need. 

char **ptr = NULL;    
// Allocates an array of pointers
ptr = malloc(sizeof(char *) * (NUM_OF_STRINGS_IN_ARRAY));
If (ptr == NULL)
    return; // Do error handling here
for (int i =0; i < NUM_OF_STRINGS_IN_ARRAY; i++)
{
    // Allocates each string in the array.
    ptr[i] = malloc(strlen(STRING));
    if (ptr[i] == NULL)
    {
        return; // Do error handling here
    }
}

Upvotes: 1

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