Program control structures in pseudocode

This basically means either an integer or character data type. Consider this example that uses character data type choice is a character variable :. Most programming languages do not allow ranges of values for case-like structures. Consider this flowcharting example that used ranges:.

Using the case control structure when using non-integer family or ranges of values is allowed when designing a program and documenting that design with pseudocode or flowcharting. However, the implementation in most languages would follow a nested if then else approach with complex Boolean expressions. The logic of the above examples would look like this:. Most textbook authors confirm that good structured programming techniques and habits are more important than concentrating on the technical possibilities and capabilities of the language that you are using to learn programming skills.

Remember, this module is concentrating on programming fundamentals and concepts to build our initial programming skills. It is not a created with the intent to cover programming languages in detail, despite the fact that at times we have to cover language mechanics. Skip to content Overview A case or switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via a multiway branch.

Consider the following which has four choices: if age equal to 18 you can vote else if age equal to 39 you're middle-aged else if age equal to 65 consider retirement else age is unimportant You get an appropriate message depending on the value of age.

Consider this flowchart example: This flowchart is of the case control structure and is used for multiway selection. Download the Four Files. Study the Files Collectively to Understand the Concepts.

Placing the Header File into the User Library. Verify that the Header File Works Properly. Practice 7: Specifc Task Functions. Problem 07a -Instructions. Problem 07b -Instructions. Solutions to Exercises in Chapter 7. Standard Libraries. Overview of Standard Libraries. Practice 8: Standard Libraries. Problem 08a -Instructions.

Solutions to Exercises in Chapter 8. Character Data, Sizeof, Typedef, Sequence. Character Data Type. Overview of the Character Data Type. Sizeof Operator. Typedef -An Alias. Sequence Operator. Problem 09a -Instructions. Solutions to Exercises in Chapter 9. Introduction to Structured Programming. Structured Programming. Introduction to Selection Control Structures. Introduction to Iteration Control Structures. Pseudocode Examples for Control Structures. Selection Control Structures.

Iteration Repetition Control Structures. Flowcharting Symbols. Module Call. Flow Lines. Sequence Control Structures. Selection Control Structures Example Practice Introduction to Structured Programming. Problem 10a - Instructions. Solutions to Exercises in Chapter Two Way Selection. If Then Else. Introduction to Two Way Selection. Traditional Two Way Selection. Boolean Data Type. Relational Operators. Overview of the Relational Operators. Compound Statement.

The Need for a Compound Statement. Other Uses of a Compound Statement. Practice Two Way Selection. Problem 11a - Instructions. Problem 11b -Instructions. Multiway Selection. Nested If Then Else. Introduction to Mulitway Selection. Nested Control Structures. Logical Operators. Overview of the Logical Operators.

Truth Tables. Case Control Structure. Traditional Case Control Structure. Multiway Selection using the Case Structure. Limitations of the Case Control Structure. Good Structured Programming Methods.

Branching Control Structures. Practice Multiway Selection. Problem 12a -Instructions. Problem 12b -Instructions. Problem 12c -Instructions.

Test After Loops. Do While Loop. Introduction to Test After Loops. Understanding Iteration in General -do while. An Example. Infinite Loops. Flag Concept. Concept Discussion. Computer Implementation. Two Flags with the Same Meaning. Multiple Flags in One Byte.

Repeat Until Loop. Understanding Iteration in General -repeat until. Practice Test After Loops. Problem 13a -Instructions. Test Before Loops. Increment and Decrement Operators. Basic Concept. Postfix Increment. Prefix Increment. Allowable Data Types. While Loop. Introduction to Test Before Loops.

Understanding Iteration in General -while. Human Example of the while Loop. Counting Loops. Variations on Counting. Practice Test Before Loops.

Problem 14a -Instructions. For Loop. Understanding Iteration in General - for. Multiple Items in the Initialization and Update. Counting Loop Conversion -a while into a for. Miscellaneous Information about the for Structure. All rights reserved. Get the number. To begin, set the factorial of the number to be one. While the number is greater than one i. Set the factorial to be the factorial multiplied by the number.

Decrement the number. Print out the factorial Prentice Hall, Inc.