Algorithm and Flowchart.

What is Algorithm ?

• A sequential solution of any program called an algorithm written in human language.
• Algorithm is first step of the solution process, after the analysis of problem, programmer write the algorithm of that problem.
• An algorithm is a finite sequence of instructions, a logic and explicit step-by-step procedure for solving a problem.

Procedure to write an Algorithm..

• The number of instructions must be finite
• To write the algorithm you first must know how to solve the problem!
• The solution must follow a logical pat
• The order of the instructions IS

Example

step 1 : start

step 2 : input number

step 3 : rem=number mod 2

step 4 : if rem=0 then

               print "number even"

           else

               print "number odd"

           end

step 5 : stop

More Example:-

What is Flowchart ?

• Graphical representation of any program is called flowchart.
• A flowchart is a graphical representation of an algorithm.
• There are some standard graphics that are used in flowchart as following:

Figure: Start/Stop terminal box

Figure: Input/Output box

Figure: Process/Instruction box

Figure: Lines or Arrows

Figure: Decision box

Figure: Connector box

Figure: Comment box

Figure: Preparation box

Figure: Separate box