Flowcharting and pseudocoding
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This document discusses flowcharting and pseudocoding. It defines a flow chart as using symbols to represent successive steps in a procedure. Pseudocode is defined as a readable textual description of a computer program that is used in developing a program. The document then lists and defines common symbols used in flowcharts like input/output, decision, flowlines, and terminals. It also lists common terms used in pseudocode like accept, display, if, and write. An example pseudocode is provided to demonstrate these concepts.
Flowcharting and pseudocoding
- 1. Lesson 2 FLOWCHARTING AND PSEUDOCODING
- 2. Flow Chart • A graphic representation of the successive steps in a procedure that system, which usually uses symbols that are interconnected with lines to show sequence or process Pseudocode • A readable description of a computer program in textual form. It is usually used as a Let x = 1st num detailed step in the process of developing a program.
- 3. Input/Output • Indicates any function of an input/output device making data available for processing or causing information available for use.
- 4. Decision • Appoints the program where a comparison is to be made and alternative processing is to occur based upon the results of the comparison.
- 5. Flowlines • Indicates direction of a data.
- 6. Preparation • Used in declaring and initializing identifiers or variables that will be used in the programs.
- 7. Processing • Represents one or more instructions that perform a processing function for the program. Ex. Addition, subtraction, multiplication, division.
- 8. On page connector • Indicates an entry form or an exit to another part of the program flowchart. It is also used to indicate the termination of a comparison operation.
- 9. Terminal • This symbol documents the beginning or end of a program.
- 10. Off page connector • This symbol indicates continuation to or from another page.
- 11. Annotation Symbol • This symbol is used when an additional description is needed.
- 12. Pseudocode Language • Accept – allow data • Close – terminating a program • Compute – mathematical computation • Declare – defining various identifiers • Display – displaying contents • Entry – marking the beginning • Exit – marking the end • If – comparing contents • Move – to copy or moved data • Perform – perform procedure • Start – marking the beginning • Stop – terminating the program execution • Write – for copying the content
- 13. Pseudocode Example Start FN = First Name LN = Last Name Num_St = number and street City = City Tel = Telephone number Input FN, LN Input Num_St, City Input Tel Print FN, LN, Num_St, City, Tel End