– however, sometimes useful to describe the overall structure of an application • Pseudocode: – artificial language based on • vocabulary (set of keywords) • syntax (set of rules used to construct the language’s Where N! To read the flow chart: • Start at the “Start” block, and follow its arrow down to the “Decision” block. ALGORITHM Sample. Pseudo Code Example 4 fill the array with random variables Pseudo Code Example 4 is very concise description of the algorithm and most programmers know how to implement it. Example 1: An algorithm that asks for a … To the right is the flow chart of a program which instructs a robot to run forward as long as its touch sensor is not pressed. The one that follows the ENDWHILE. Each house owner must pay tax based on the value of the house. pseudocode, as well as flowcharts, which are another way of describing algorithms. 2 Writing algorithms using pseudocode The following five examples use the above pseudocode terms. • Flowcharts: – graphical description of the flow of processing steps – not used very often, somewhat old-fashioned. What statement do we execute when the loop is over? Example 4: Write pseudo code to print all multiples of 5 between 1 and 100 (including both 1 and 100). Example 6: Write pseudo code that will perform the following. Example 3 Write an algorithm and draw a flowchart that will read the two sides of a rectangle and calculate its area. Algorithm and flowchart are the powerful tools for learning programming. Repeat Call Procedure Monopoly_Move for next player. Page 1 of 13 Computer Science 2210 (Notes) Chapter: 2.1 Algorithm design and problem-solving Topic: 2.1.2 Pseudocode and flowcharts U Introduction to Pseudocode This section covers the use of pseudocode in the production of algorithms. Decide if this player must drop out. GET Data . a) Read in 5 separate numbers. 2.1 Example 1 A town contains 5000 houses. pseudocode: count = 0 WHILE count < 10 ADD 1 to count WRITE count ENDWHILE WRITE “The end” no Notice that the connector and test at the top of the loop in the flowchart become the WHILE stmt in pseudocode. Algorithm and flowcharts helps to clarify all the steps for solving the problem. Since there is a use of the loopcounter to succeed to the next element in the array the for loop is vital. b) Calculate the average of the five numbers. = 1 * 2 * 3 *...* N. This flowchart represents a "loop and a half" — a situation discussed in introductory programming textbooks that requires either a duplication of a component (to be both inside and outside the loop) or the component to be put inside a branch in the loop. Sample Pseudocode . Until all players except one have dropped out. Pseudocode Input the width (W) and Length (L) of a rectangle Calculate the area (A) by multiplying L with W Print A Pseudocode Example: This is the pseudocode for a Game of Monopoly, including one person's move as a procedure: Main Procedure Monopoly_Game Hand out each player's initial money. The end of the loop is marked by ENDWHILE. Houses When the touch sensor is pressed the motors stop and the program ends. Decide which player goes first. Example 5: Write pseudo code that will count all the even numbers up to a user defined stopping point. 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