Split char* at delimiter in freestanding mode c++

Question

I am trying to write my own operating system. I have followed the tutorials on the OSDev Wiki, and I am now working on writing a console mode, with commands. I need to be able to split a char* into a char**, without all the library functionality (hence freestanding). I have tried iterating through until I meet my delimiter etc, but however I do it, I just get garbage stuck on the end of my first result. What am I doing wrong? This is what I have so far:

static char** splitStr (char* string, char delim) {

    char returner[VGA_WIDTH][255];
    int loc = 0;
    int innerLoc = 0;
    for (int i = 0; string[i] != 0x00; i++) {
        char c = string[i];
        if (c != delim) {
            returner[loc][innerLoc] = c;
            innerLoc++;
        } else {
            print ("a string was ");
            println (returner[loc]);
            innerLoc = 0;
            loc++;
        }
    }
    print ("the first string was ");
    println (returner[0]);
    return (char**)returner;
}

I am asking a question about how to write a specific function in C++ freestanding mode.

Answer 1

void split(const char* str, const char d, char** into)
{
    if(str != NULL && into != NULL)
    {
        int n = 0;
        int c = 0;
        for(int i = 0; str[c] != '\0'; i++,c++)
        {
            into[n][i] = str[c];
            if(str[c] == d)
            {
                into[n][i] = '\0';
                i = -1;
                ++n;
            }
        }
    }
}

I'm allocating using calloc to get rid of garbage characters.

EDIT: You should allocate the pointers inside the char** before writing to them.

void allocarr(char** pointers, int bytes, int slots)
{
    int i = 0;
    while(i <= slots)
    {
        pointers[i] = (char*)calloc(1, bytes);
        ++i;
    }
}

...

char** sa = (char**)malloc(50*sizeof(char*));
allocarr(sa, 512, 50);
split("Hello;World;", ';', sa);
puts(sa[0]);