When a file is opened for Input, data can be written from the program to that file. When a file is closed, the connection between the internal and external names is terminated. If a single record is...

When a file is opened for Input, data can be written from the program to that file. When a file is closed, the connection between the internal and external names is terminated. If a single record is to be changed in a sequential file, then the entire file must be rewritten to a temporary file.