Steps in Programming

Steps in Programming

• Every programming task have two phase
• Design phase
• Implementation phase 
• Design phase
• Identifies the problem and defines the steps “how to obtain the solution ” 
• Algorithm -A Set of instructions (steps) to obtain a solution for a computational problem 
• Implementation phase 
• Implement the designed algorithm (procedure) in selected programming language

Flow Chart

• A graphical representation of steps of a procedure (computer program)
• Made up of rectangles, diamonds and other shapes connected with arrows
• Arrows indicate the flow of the procedure

Flow Chart : Symbols

Flow Chart : Rules

• All symbols of the flowchart are connected by flow lines (note arrows, not lines) 
• Flow lines enter the top of the symbol and exit out the bottom, except for the Decision symbol, which can have flow lines exiting from the bottom or the sides
• Generally flow charts flow from top to bottom 
• The beginning and the end of the flowchart is indicated using the Terminal 
• Connectors are used to connect breaks in flow chart

Pseudo Code

• Pseudo code is an informal language that helps programmers develop and represent algorithms
• Very similar to everyday English
• Can not be executed in a Computer
• However, a carefully prepared Pseudo code can be easily implemented in a programming language

Example 

• A Pseudo code of an algorithm to calculate and display the average of two integer number given by the user
• Steps
• Declare and initialize variables
• Input values for variable
• Calculation 
• Display the result

Answer