A design technique that programmers use to break down an algorithm into modules is known as
The Tradition of Sharing Show
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Why should I post the question or an answer?To start with, Sr2Jr’s first step is to reduce the expenses related to education. To achieve this goal Sr2Jr organized the textbook’s question and answers. Sr2Jr is community based and need your support to fill the question and answers. The question and answers posted will be available free of cost to all. The pleasure of all reading is doubled when one lives with another who shares the same. -Katherine Mansfield A real-life problem is complex and big. If a monolithic solution is developed it poses these problems −
To overcome these problems, the solution should be divided into smaller parts called modules. The technique of breaking down one big solution into smaller modules for ease of development, implementation, modification and maintenance is called modular technique of programming or software development. Advantages of Modular ProgrammingModular programming offers these advantages −
Identifying the ModulesIdentifying modules in a software is a mind boggling task because there cannot be one correct way of doing so. Here are some pointers to identifying modules −
For coding, each module has to be again broken down into smaller modules for ease of programming. This can again be done using the three tips shared above, combined with specific programming rules. For example, for an object oriented programming language like C++ and Java, each class with its data and methods could form a single module. Step-by-Step SolutionTo implement the modules, process flow of each module must be described in step by step fashion. The step by step solution can be developed using algorithms or pseudocodes. Providing step by step solution offers these advantages −
Let’s look at an example. Control StructuresAs you can see in the above example, it is not necessary that a program logic runs sequentially. In programming language, control structures take decisions about program flow based on given parameters. They are very important elements of any software and must be identified before any coding begins. Algorithms and pseudocodes help analysts and programmers in identifying where control structures are required. Control structures are of these three types − Decision Control StructuresDecision control structures are used when the next step to be executed depends upon a criteria. This criteria is usually one or more Boolean expressions that must be evaluated. A Boolean expression always evaluates to “true” or “false”. One set of statements is executed if the criteria is “true” and another set executed if the criteria evaluates to “false”. For example, if statement Selection Control StructuresSelection control structures are used when program sequence depends upon the answer to a specific question. For example, a program has many options for the user. The statement to be executed next will depend on the option chosen. For example, switch statement, case statement. Repetition / Loop Control StructuresRepetition control structure is used when a set of statements in to be repeated many times. The number of repetitions might be known before it starts or may depend on the value of an expression. For example, for statement, while statement, do while statement, etc. As you can see in the image above, both selection and decision structures are implemented similarly in a flowchart. Selection control is nothing but a series of decision statements taken sequentially. Here are some examples from programs to show how these statements work − When module can modify the argument in the calling part of the program?When an argument is passed by reference, the module can modify the argument in the calling part of the program. T or F: Passing an argument by value is a means of establishing two-way communication between modules.
Does calling a module and defining a module mean the same thing?Calling a module and defining a module mean the same thing. A flowchart shows the hierarchical relationships between modules in a program. A hierarchy chart does not show the steps that are taken inside a module. A statement in one module can access a local variable in another module.
What are algorithms used for quizlet?A sequence of logical instructions for carrying out a task. In computing, algorithms are needed to design computer programs."
What is a group of statements that exists within a program for the purpose of performing a specific task?A function is a group of statements that exist within a program for the purpose of performing a specific task.
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