Misallocation

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
  struct raw { int value; char string[32]; };
  FILE *outfile;
  struct raw *data;
  data = malloc( sizeof(struct raw) );
  data->value = 60;
  strcpy( data->string, "This is a string\n" );
  outfile = fopen("data.dat","w");
  
  if( outfile==NULL )
    exit(1);
  fwrite(data, sizeof(data), 1, outfile);
  fclose(outfile);
  puts("File written");
  free(data);
  return(0);
}