Question

What is the difference between a module and a function? What three characteristics of a function are decribed in an IPO chart

Answer 1

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Difference between a module and a function :-

Module :- A module is a group of statements in a program to perform a particular task. A module does not exists alone, it is always used with other modules and main program.A module contains functions and declarations.

Function :- A function is a piece of valid, reusable code which is used to perform a single action. Functions can be pre defined or user defined. Function returns a value to the program which calls it. A function has to be declared first and then to be defined.

Three characteristics of a function described in an IPO chart are :-

IPO chart is a tool used to design functions in business practices. IPO stands for Input, Processing and Output. IPO chart describes input, processing and output property of a function.

Input column describes data that is passed to the function as argument.

Processing column describes the process that function performs.

Output column describes data returned from the function.