Thread: Question about memory allocation

So, this is a pretty simple question I'm assuming, but I am new to memory management in general so I was wondering if you guys could help me.

I was wondering if this code has a memory leak?: [C] #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> - Pastebin.com

Code:

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

int main(int argc, char **argv) {

	FILE *file_handle = fopen("in.xx", "rb");

	int c;
	char *delta = malloc(1);
	delta[0] = '\0';
	int delta_length = 0;
	do {
		c = fgetc(file_handle);
		
		if (isspace(c) || c == EOF) {
			
			if (delta_length == 0) {
				goto free_delta;
			}
			
			printf("%s\n", delta);
			
		free_delta:
				free(delta);
				delta = malloc(1);
				delta[0] = '\0';
				delta_length = 0;
			
		} else {
			delta = realloc(delta, 1);
			delta_length += 1;
			delta[delta_length - 1] = c;
			delta[delta_length] = '\0';
		}
		
	} while (c != EOF);
	
	free(delta);
	fclose(file_handle);

	return 0;
}

I've ran it through "Deleaker" on Visual Studio and it says it does but it looks alright to me...

Also, if anyone knows of a good resource of the do's and don'ts of memory management I'd love to hear it.

Thanks.