ROHIT's Smart Class Room

  3)   Iterative control structures: - Iterative control structure is also called as looping control statements. Looping control statements are used to execute a block of code repeatedly as long as a given condition is true. Instead of writing the same code multiple times, loops help avoid writing repetitive code. Loop declaration and execution can be done in the following ways: Check the condition to start a loop. Initialize the loop with declares a variable. Executing the statements inside a loop. There are three main types of loops in C:                    a)  for loop.                    b)  while loop.                    c)  do while loop.   a) For loop: - For loop a best looping control structure which is used to execute the statement repeatedly as long as a giv...

Windows operating system: - Windows or win is an operating environment created by  Microsoft  that provides an interface known as a  GUI  (graphical user interface). Windows eliminates the need to memorise commands for the  command line  ( MS-DOS ) by using a  mouse  to navigate through menus, dialog boxes,  buttons ,  tabs , and  icons . Windows is a collection of programs known as an  operating system  (OS) that controls a PC (personal computer).  Windows is a series of  operating systems developed by Microsoft. Each version of Windows includes a  graphical user interface , with a  desktop  that allows users to view files and folders in  windows . It was first introduced with version 1.0 on April 10,  1985 . It is designed for both home computing and professional purposes. Past versions of Windows home editions include Windows 3.0 (1990), Windows 3.1 (1992), Windows...

  Types of operating systems: - The various operating systems are developed depending on the requirements and the cost-bearing capacity of the users.                                    1.  Single-User Operating System.                                   2.  Multi-User Operating System.                                   3.  Single-Tasking Operating System.                                   4.  Multi-Tasking Operating System.                                 ...

  Drop table from database: - The drop command affects the structure of the table, not the data. It is used to delete an existing table from the database. We use the “ DROP TABLE table_name ” command statement to delete a table. The SQL command to delete the table from the database with Python code is:                          Example: -                               output: -                                    final : -     

Deleting records from table: - We can delete records from an existing table by using “ Delete from ” statement. The SQL command to delete the records from table with python code is:                Example: -                       output: - To view the updated records of table, we use command.

Updating records in table: - The update command is used to change the existing values in a database. By using update command, we can correct or update a specific value. It only affects the data but not the structure of the table.   The SQL command to update the records values in table with python code is: To view the updated records of the table, we use the command.