File Handling In QBASIC Important Question Answer Class 10 Computer Science

 1. What is a program file?

Ans: A file that has a set of instructions and can perform a task when it is executed is known as a program file.

 

2. What is a data file?

Ans: Data file is the collection of related data stored in memory.

 

3.    What are the different modes of file handling?

Ans: The different file modes are listed below:

OUTPUT mode -To create a new data file and write data in it.

INPUT mode -To retrieve /read the contents of the existing data file.

APPEND mode - To add more records to  the existing file.

 

 

4. Functions and statements used in file handling:

INPUT # statement: It is used to read the data of a sequential file and stores them in variable.

 

LINE INPUT- # statement:  It reads an entire line from a sequential file and assign to a string variable.

 

EOF() Function: This function is used to check the end of file.

 

INPUT$ Function: It is used to return a part of a string from a file.

 

FILES statement: This statement displays a list of files of a disk or a directory.

 

KILL statement: This statement is used to delete files.

 

NAME statement: This statement renames a file.

 

CHDIR statement: This statement changes a drive's default directory.

 

MKDIR statement: This statement creates a new directory or subdirectory.

 

RMDIR statement: This statement removes a subdirectory (folder).

 

SHELL Command: This command is used to exit temporarily from the QBASIC environment to DOS prompt.

 

SYSTEM command: This command closes all the files and exits permanently from the QBASIC.