PseudocodeOther common way to represent algorithmsSimilar to programming languages like Visual Basic butDoes not require strict rules as programming languages STARTSTOPStartRead NAME, SSN, CREDITSIF CREDITS >= 10 THENTUITION = 1000ELSETUITION = 100 * CREDITSENDIFWrite NAME, SSN, TUITIONStopPseudocode for Tuition problemNOYES

READ NAME, SSN, CREDITSWRITE NAME, SSN, TUITIONCREDITS 10 ?TUITION = 1000 ITEMQTYPRICEAMTODDISCOUNTNAMESUBBILLTAXESBILLĮxercise 2: Billing problem*Exercise 11 (Chapter 2)Įxercise 1 solution: Program Flowchart & corresponding Pseudocode* Otherwise (else), output the students name, a U (Unsuccess), and the number of additional points needed for an S.Įxercise 2: Billing problem*Look at the program flowchart on the next slide, and answer the following questions:For what variables are values read as input ?What variables values are output ?What constants are used ?Simulate the execution of this algorithm, assuming the values shown below are read as input for the first four variables named. Output the student name and an S (Success) if the average of the three grades is 65 or more. Write a program flowchart and corresponding pseudocode to solve the following problem: Assume the input for a student is name, student number, and three grades. Part-time students pay $100 per credit for tuition.Exercise 11 (Chapter 3)Įxercise 1s solution: (Part 1: System Flowchart)*Įxercise 1 solution: (Part 2: Program Flowchart)*

Total credits of less than 10 indicate that the student is part-time. Full-time students pay a flat rate of $1000 for tuition. Total credits of 10 or more indicate that the student is full-time. The bill will contain the student name, Social Security Number, and computed tuition.

The input will contain the student name, Social Security Number, and total number of credits for which the student has enrolled. READAMOUNTYESNOYESNOCould be many processings,Could be many processings,Įxercise 1: Tuition bill Problem*Write the program flowchart to prepare a tuition bill. 10SUBBIL =AMOUNT DISCOUNTSUBBIL=AMOUNT::An Example Processing 3::::General formAMOUNT> 200 ?DISCOUNT =AMOUNT *. IFTHENELSE / DECISION SYMBOL*Is Condition True ?Processing 1Processing 2 READ$1000,$3000.061) Variables names are place-holders for values2) Variable names are chosen by programmer3) Names should be descriptive The computer will perform the calculation first, and then, assign the result to REGCOM Statement that assign a value (calculated or not) to a variable A value that doesnt change Variables Data independence Assignment statement Constant Data items whose values may change, or vary during processing Using Variables instead of their specific values gives a program the capacity to perform processing on any set of input data. Preparation symbolControl operations: Set limit on loop-control variables, Initialize accumulators, etc. Input/Output symbolReading data from an input medium or writing data to an output mediumĪlgorithm vocabulary*SYMBOLSNAMEFlowline symbolUSESequence of operations and direction of data flowDecision symbolDecision-making operationsPredefined-process symbolOperations specified elsewhere (not in the current algorithm)Īlgorithm vocabulary*SYMBOLSNAMEConnector symbolUSEExit to, or entry from, another part of the Flowchart STARTSTOPSYMBOLSNAMETerminal interrupt symbolsUSETerminal point (start, stop, or break) Pseudocode:English-language statements that describe the processing steps of a program in paragraph form.Īlgorithm ?Step-by-step procedure to solve a problemAn algorithm can be expressed using:A System FlowchartA Program FlowchartA Pseudocode, etc.Any algorithm must meet the following requirements:Use operations from only a given set of basic operations (+,-,/,*,)Produce solution in a finite number of such operationsĮxample of algorithm (program flowchart)*REGSALES = Regular sales amountSALESALES = Reduced sales amountREGCOM = Regular commission (6%)SALESCOM = Sales commission (3%)PAY = Total pay dueAlgorithm for determining salespersons payIPO Recall form Class 2 & 3Use of tools by analyst/programmer in SDLCDesign/Programming tools used for:Specifying problem-solving logic Learning ObjectivesUnderstand the relation between Algorithm and Pseudocode or program flowchartDraw flowchartsWrite pseudocodes Program Flowchart, Pseudocode & Algorithm development

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