Function and use of QBASIC statements

 

Function and use of QBASIC statements (Modular programming and File Handling).

1.  Write down the function of the following statement.    (Specification Grid 2065)

KILL : It deletes the file or files from specified drive. (Supp. 2070, SEE 2073 Supp, SEE 2074)

 

MKDIR: It creates a directory or sub-directory in specified drive.  (SLC 2065)

 

NAME: It renames the file.  (SLC 2069, 2070, SEE 2073)

 

CLOSE: It close the statements of dat file.  (SLC 2070, supp 2070, SEE 2073, 2073 supp,  SEE 2074)

 

RMDIR: It removes the directory or sub directory from specified drive.

 

NAME: It renames the files. (SLC 2066, SLC supplementary 2066)

 

FILES: List files and directories from specified location. (SEE 2075)

 

KILL: Deletes files from a specified location.     (SLC 2067, 2069)

 

INPUT: It is used to open an existing file and read the records of file.

 

MKDIR: It creates a directory or subdirectory in specified drive.   (SLC 2068)

 

CHDIR: It is used to change the current directory.

 

SHELL: It is used to enter the DOS prompt temporarily.

 

LINE INPUT#: It is used to read and entire line without delimiters from a sequential file into a string variable.

 

INPUT#: It is used to read data items from a sequential file and assign them to program variable.

 

WRITE #:  It is used to send one or more data items to the specified sequential data file. (SEE 2075)

 

INPUT$: It is used to reads the specified number of characters from the data files.

 

OPEN: It is used to open a sequential file.

 

OUTPUT: It is used to open a file first creates a file using OPEN statement.

 

APPEND: It is used to adding records to the end of file that previously exists on disk.

 

CLOSE: It is used to Transferring the data currently in primary to secondary memory.

EOF: It is used to indicate the end of a sequential file.    (SLC 2068)

 

CALL: It is used to Transfer control to another procedure.     (SLC 2071)

 

PRINT #: It is used to send a values to a data file.

 

SYSTEM: It is used to close the QBASIC program.

 

SHARED: This statement is used to make the variable global between main module and sub module.(SLC 2071)

 

COMMON SHARED: It defines global variable that can be shared throughout a program or between chained programs.

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QBASIC program to input any string and count total no of consonants letter