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Software :-                                              A set of instruction that tells the computer about the tasks to be performed and how these tasks are to performed, is known as Software. The set of instructions, which control the sequence of operations, are known as Program. It is a sequence of instructions, written to perform a specific  task with a computer.          There are Two types of software :-  Application software:- Application software is a group of program designed for fulfill the demand of end user e.g. MS office, Power point, Window Media Player. Application software is capable of handling user inputs and helps the user to finish the task. It's also called end-user programs or only and app. It resides above system software. First user affect system software then he/she deals with application sof...

  Symbolic Constant                Symbolic constant are the name given to constant values that can not be changed during the executions of the program like. Generally  these are defined with the help of # defined statements in the definition section of the program.                e.g          #include<stdio.h>                               #include<conio.h>                                   #define PI     4.15                    main()          {               ___________    ...