Explode in C

gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
char **explode(char *string, char separator, int *arraySize)
{
        int start = 0, i, k = 0, count = 2;
        char **strarr;
        for (i = 0; string[i] != '\0'; i++){
                /* Number of elements in the array */
                if (string[i] == separator){
                        count++;
                }
        }
        arraySize[0] = count-1;
        /* count is at least 2 to make room for the entire string
         * and the ending NULL */
        strarr = calloc(count, sizeof(char*));
        i = 0;
        while (*string != '\0') {
                if (*string == separator) {
                        strarr[i] = calloc(k - start + 2,sizeof(char));
                        strncpy(strarr[i], string - k + start, k - start);
                        strarr[i][k - start + 1] = '\0'; /* ensure null termination */
                        start = k;
                        start++;
                        i++;
                }
                string++;
                k++;
        }
        /* copy the last part of the string after the last separator */
        strarr[i] = calloc(k - start + 1,sizeof(char));
        strncpy(strarr[i], string - k + start, k - start);
        strarr[++i] = NULL;
 
        return strarr;
}