Function to read in a word into a struct array - c

Question

I am having an error with the code we are using, was wondering if someone could help debug. Seems like we are getting a malloc error. Thanks.
void readWords(char norm_word[MAXSIZE], Word ** array) {
int i = 0;
bool found = false;
int result = 0;
Word * current_pointer = malloc (sizeof(Word*));//creates a temporary variable for each pointer in the array
for (i=0; i<word_counter; i++) {
current_pointer = *(array+i); //accesses the current pointer
result = strcmp(norm_word, (current_pointer -> word)); //compares the string to each stored string
if (result == 0) {
found = true;
(current_pointer->freq)++;
break;
}
}
if(!found) {
if(pointer_counter == word_counter) {
array = realloc(array, sizeof(array)*2);
pointer_counter*=2;
}
Word * new_pointer = (Word*) malloc (sizeof(Word*));
strcpy(new_pointer -> word, norm_word);
*(array + (pointer_counter - 1)) = new_pointer;
word_counter++;
}
;
}

Answer 1

All pointers have the same size on your system. So a sizeof always returns the same size for any pointer. You want to allocate for the structure, so you need to use sizeof on the name without the star. malloc will return the pointer to that block of memory afterwards.
Here is a short implementation:
#include <iostream>
#include <string>
typedef struct
{
int num;
int numnum;
}numbers;
int main(int argc, char ** argv)
{
numbers* n = (numbers*)malloc(sizeof(numbers));
n->num = 1;
n->numnum = 2;
free(n);
return 0;
}

Answer 2

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#define MAXSIZE 64
typedef struct word {
char word[MAXSIZE];
int freq;
} Word;
int word_counter = 0;
size_t pointer_counter = 16;//Number of pointers that ensure
void readWords(char norm_word[MAXSIZE], Word ** array) {
int i = 0;
bool found = false;
Word *current_pointer = *array;
for (i=0; i<word_counter; i++) {
if(strcmp(norm_word, current_pointer->word) == 0){
found = true;
current_pointer->freq++;
break;
}
++current_pointer;
}
if(!found) {
if(pointer_counter == word_counter) {
pointer_counter *= 2;
*array = realloc(*array, sizeof(Word)*pointer_counter);
}
Word *new_pointer = *array + word_counter;
new_pointer->freq = 1;
strcpy(new_pointer->word, norm_word);
++word_counter;
}
}
int main(void){
Word *vocabulary = calloc(pointer_counter, sizeof(Word));
char norm_word[MAXSIZE];
while(1==scanf("%s", norm_word)){
readWords(norm_word, &vocabulary);
}
{
int i;
for(i = 0; i < word_counter; ++i){
printf("%s(%d)\n", vocabulary[i].word, vocabulary[i].freq);
}
}
free(vocabulary);
return 0;
}