Program Design & Development EE 201 C7-1 Spring 20121

 Achieve Comprehension LOL of using Flowcharting in programming  Demonstrate a willingness to respond to using Flowcharting in programming. Class Learning Objectives C7-1 Spring 20122

Matlab Programming Mode C7-1 Spring 20123

Algorithms and Control  Structures Algorithm: an ordered sequence of precisely defined instructions that performs some task in a finite amount of time.  Ordered means that the instructions can be numbered, but an algorithm must have the ability to alter the order of its instructions using a control structure. C7-1 Spring 20124

There are three categories of Algorithmic operations:  Sequential operations: Instructions executed in order.  Conditional operations: Control structures that first ask a question to be answered with a true/false answer and then select the next instruction based on the answer.  Iterative operations (loops): Control structures that repeat the execution of a block of instructions. C7-1 Spring 20125

Steps for developing a computer solution: Table 4.1–1  1. State the problem concisely.  2. Specify the data to be used by the program. This is the “input.”  3. Specify the information to be generated by the program. This is the “output.” (continued …) C7-1 Spring 20126

Steps for developing a computer solution: Table 4.1–1  4. Work through the solution steps by hand or with a calculator; use a simpler set of data if necessary.  5. Write and run the program.  6. Check the output of the program with your hand solution. (continued …) C7-1 Spring 20127

Steps for developing a computer solution: Table 4.1–1  7. Run the program with your input data and perform a reality check on the output.  8. If you will use the program as a general tool in the future, test it by running it for a range of reasonable data values; perform a reality check on the results. C7-1 Spring 20128

Effective documentation can be accomplished with the use off: C7-1 Spring 20129

Introduction to Flowcharts C7-1 Spring

Introduction to Flowcharts C7-1 Spring

C7-1 Spring

OBJECTIVES At the end of this lesson, you will be able to understand:  The meaning of flowchart.  The basic parts of the flowchart such as flowchart symbols and the flow lines connecting these symbols.  The advantages and limitations of flowchart C7-1 Spring

MEANING OF A FLOWCHART  A flowchart is a diagrammatic representation that illustrates the sequence of operations to be performed to get the solution of a problem. C7-1 Spring

GUIDELINES FOR DRAWING A FLOWCHART  Start or end of the program  Computational steps or processing function of a program  Input or output operation  Decision making and branching  Connector or joining of two parts of program  Flow line C7-1 Spring

16  Draw a flowchart to compute and display the sum, average and product of three numbers EXAMPLES ON FLOWCHARTING Sequential operation C7-1 Spring 2012

EXAMPLES ON FLOWCHARTING C7-1 Spring

Flowchart 18 C7-1 Spring 2012 Display B T F Start Input A,B,C A>B Display A End Display C B>C Display C T F A>C F T

EXAMPLES ON FLOWCHARTING C7-1 Spring

C7-1 Spring Idea of Looping Flowchart

EXAMPLES ON FLOWCHARTING C7-1 Spring

C7-1 Spring Idea of Looping Flowchart