Mine

if(strcmp(cmdtext,"/coords",true)==0) {
  new Float:X,Float:Y,Float:Z;
  new coord[256];
  new File:fhandle;
  GetPlayerPos(playerid,X,Y,Z);
  fhandle = fopen("Coords.txt",io_append);
  format(coord,sizeof(coord),"Coords: (%0.2f,%0.2f,%0.2f); // %0.2f \n",X,Y,Z,cmdtext[4]);
  SendClientMessage(playerid,0xFFFFFFAA,coord);
  fwrite(fhandle,coord);
  fclose(fhandle);
  }