Thread: Is this the right/best way to free up the memory

I got my code to work, but need some feedback if I am free up the memory correctly? Is there a way to make sure that I have clear up the memory? I just wanted to get in the good habit since I am pretty new at this. Thanks for the feed back:

Code:

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


char *readfile(const char *filename);


int main(int argc, char *argv[]) {
  char *pms;
  int size = 1;
  pms = readfile(argv[1]);
  printf("%s", pms++);
  return (0);
}


char *readfile(const char *filename){
  static char c;
  char *out;
  FILE *myfile;
  int size;
  out = (char *)malloc(24130);
  int x=0;
  myfile = fopen(filename, "r");
  while ((c=fgetc(myfile)) != EOF){
        out[x]=c;
        x++; }
  //resize the memory here
  size = strlen(out)+1;
  if(!realloc(out, size))
  {
     printf("Unable to allocate memory");
     return (0);
  }
  return(out);
  free(out);


}