Related: Learning How To Code Advantages of pseudocode When using custom keywords to represent specific actions, consider creating a glossary to explain each term. Pseudocode is informal and meant for human interpretation, so you can decide which words closely describe your algorithm. You can create other pseudocode keywords to suit your work. WHILE the number of daily active users is under 100 If the state is false, the program skips the loop. When using the WHILE command, the loop only happens if the state you provide is true. REPEAT-UNTIL lists the conditions of the loop at the bottom of the code, but WHILE describes the conditions at the top of the code. WHILE is a looping element that explains the limits of the loop at the beginning of the statement. You can list the sequence to repeat, then explain when the program terminates it. It’s similar to FOR, but instead of applying actions to a specific data set, it loops the action until the algorithm achieves a goal. The REPEAT-UNTIL construct is a loop that continues until a particular situation happens. You can then describe the action you want to apply to each of those numbers. To use this action, you can define the data set's boundaries, such as a list of numbers. You use the FOR construct to apply instructions in an algorithm to every item in a data set. Here’s an example:įOR is a command that shows a repeating action or a loop. You use the pseudocode to explain what happens when each outcome occurs. It means "in the case." While you use IF-THEN-ELSE for algorithm statements with two possibilities, CASE is for instructions with multiple options. Here’s an example:ĬASE is the construct for conditional statements with multiple outcomes. IF-THEN-ELSE commands can be a type of sequence because you first consider the condition, then choose a single outcome. It's a conditional statement that involves explaining what happens if one event occurs or fails to occur. IF-THEN-ELSE is a construct that describes part of an algorithm with two potential outcomes. Some typical commands that programmers use in pseudocode are: All pseudocode instructions are linear, occurring in order. In pseudocode, items in a series are each on consecutive separate lines. The primary constructs you can use in pseudocode include: SEQUENCEĪ sequence is the order of tasks in an algorithm. Writing pseudocode constructs in uppercase can inform the reader that the phrase describes a critical action for the algorithm. To properly represent an algorithm, pseudocode includes representations of several elements of programming logic called constructs. Related: How To Become a Computer Programmer Primary constructs of pseudocode This allows them to determine the optimal way to write their algorithms and plan the layout of a large software project. Programmers often use pseudocode as a reference before writing the actual code for a program. Programming languages may involve complex logic, and pseudocode provides an easy way for people to understand the basics of how software functions without having to learn computer programming. Related: Q&A: What Is Coding? Why use pseudocode? Programmers can interpret each line of pseudocode and create algorithms using their preferred coding language. You can also include mathematical symbols to reference data sets in pseudocode. Pseudocode primarily uses plain text to describe various coding actions and their correct sequence in the algorithm. It allows programmers to plan any algorithm's structure using simple commands. Pseudocode is a simplified representation of an algorithm that uses the English language to describe coding logic. In this article, we define pseudocode, review its primary constructs, explain how to write it and provide an example. If you develop software, learning about pseudocode can help you improve your coding process. Pseudocode is a planning method that programmers can use to organize and outline their coding logic. Writing software involves using computer algorithms and data storage structures.
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