Introduction to Programing.

PROGRAM

A program is a set of logically arranged instructions which are given by a person to the computer with a view to make the computer work on input provided and generate specific results.

INPUT

Input is the term used to refer to the facts and figure which the user feeds into the computer. Input is something which we want the computer to process and convert into desired results. Input is also called DATA. The computer follows instructions given by the way of a program and uses the input provided to give us the required results.

PROCESSING

Processing is the term used to refer to the results obtained after processing is complete. It is also called Information. In other words,  processed input is output. The name is allocated in the memory is called variable. When a value is stored in a memory location, it means a variable is assigned a value. The value of the data become the variable's current value.

For the computer to function as per our requirement, we should provide some data and instruction which will tell the computer exactly what to do with the data. The instruction Would be of three types.

1.  Instruction which tell the computer to ask data from the user.

2.  Instruction which tell the computer to process the data.

3.  Instruction which tells the computer to show/print results.

The computer then works on the instruction one by one. The data is stored in septate location in memory. Each such location is identified by the names. Intermediate results that are generated by instruction are also stored in the memory. Final results when available are shown on screen on or printed on the printer....