deleting content of files

[Nandor]

Can someone tell me how can I delete the entire content of a .bin file?

[bnbertha]

Delete it and then write an empty one.

[Nandor]

[I deleted the file with system("del ...") but i can't create a new one in his place with fstream file;file.open(...);

                                fstream wrtfile;
		wrtfile.open("C:\\mycmd\\sysfiles\\var.bin",ios::binary|ios::trunc);
			wrtfile<<readln;
		wrtfile.close();
		cout<<"Variable succesfully deleted";

[Mitsakos]

You don't need to delete it before ios::trunc. It automatically erase it's contents.