/*;*/
void filebackup(char filename_org[257],char new_real_mass_filename[257]){

/* == BACKUP ===================================================;*/

int i;					/*Remove \n code;*/
for (i=0;i<=20;i++){
if (filename_org[i]=='\n'){filename_org[i]='\0';}
if(new_real_mass_filename[i]=='\n'){new_real_mass_filename[i]='\0';}
}

char filename_bak[257];
strcpy(filename_bak,filename_org);

for (i=0;filename_org[i]!='\0';i++)

	{	/* make filename_bak unique.bak;*/

	if(filename_org[i]=='.')
		{
		filename_bak[i+1]='b';
		/*filename_bak[]='';*/
		filename_bak[i+2]='a' ;
		filename_bak[i+3]='k' ;
		goto escape;
		}
	}
printf("Cannot Back up without filename.??? style.\n");
/*fault make backup for not *.??? style;*/
printf("\n");
printf("Old file :%s\n",filename_org);
printf("New file :%s\n",new_real_mass_filename);
exit(1);
/*=====================;*/
escape:;
/*=====================;*/
char buf[257];

FILE *read_fp;
FILE *read2fp;

if (((read_fp=fopen(filename_org,"r"))!=NULL)&&((read2fp=fopen(new_real_mass_filename,"r"))!=NULL))
		{
		fclose(read_fp);
		fclose(read2fp);

		remove(filename_bak);
		rename(filename_org,filename_bak);
		remove(filename_org);
		rename(new_real_mass_filename,filename_org);

		printf("Backup Succeeded.\n\n");
		printf("Old file %s\nNew file %s\n",filename_bak,filename_org);

		}
else
	{
	printf("Backup fault. Please check \n\n");
	printf("Old file %s\nNew file %s\n",filename_org,new_real_mass_filename);

	exit(1);
	}
/*==Old Logic================================================================;
FILE *read_fp;
FILE *writefp;
int noexist;
noexist=0;
/*remove(filename_bak);
if((read_fp=fopen(filename_org,"r"))==NULL){noexist=1;goto escape2;};
writefp=fopen(filename_bak,"w");
while((fgets(buf,256,read_fp)!=NULL)){fputs(buf,writefp);}
fclose(writefp);
fclose(read_fp);

/*remove(filename_org);
if((read_fp=fopen(new_real_mass_filename,"r"))==NULL){noexist=1;goto escape2;}


while((fgets(buf,256,read_fp)!=NULL)){fputs(buf,writefp);}
writefp=fopen(filename_org,"w");
fclose(writefp);
fclose(read_fp);

escape2:;
if(noexist==0){printf("Backup Succeeded.\n");};

if(noexist==1){printf("Backup fault. Please check \n\n");
		printf("%s \n%s \n",filename_org,new_real_mass_filename);}
=======================================================================;*/

}
/*============================================================================;*/