Question

what are the logical construct used in flowchart

Answer 1

LOGIC FLOWCHART SYMBOLS 
The following symbols are used on a Logic Flowchart: 

Flow of Control -- A symbol used to indicate the control direction or movement between other symbols. 

  

·          Termination -- A symbol used to indicate the start and finish of the flowchart. 



Process Box -- A symbol used to illustrate the occurrence of any process or action. 

  

·          Decision Diamond --   A symbol used to distinguish between two states of affairs and as a consequence direct the flow of control one way or another.  There are only two possible exits to a decision diamond, YES or TRUE and NO or FALSE. 



Example

The example Logic Flowchart calculates customer discounts for a company that sells merchandise to wholesale and retail outlets.  Wholesale customers receive a two percent discount on all orders.  The company also encourages both wholesale and retail customers to pay cash on delivery by offering a two percent discount for this method of payment.  Another two percent discount is given on orders of 50 or more units.  The diagram clearly illustrates that three decisions must be made before the total discount can be determined.