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calcrectarea subfunctionfunction call area calcrectarealenwidfunction header function area calcrectarealen wid in the function call the two
printrectarea functionfunction call printrectarealength widthfunction header function printrectarealen wid in the function call there are two
readlenwid functionfunction call length width readlenwidfunction header function lw readlenwidin the function call not any argument is passed hence
illustration of subfunctionsthis is an illustration of running this programgtgt rectareaplease enter the length 6please enter the width 3for a
function callin the function call not any arguments are passed so there are no input arguments in the function header the function returns an output
executing a programrunning the program would be completed by typing the name of the script this would call the other functionsgtgt
execution stepswhenever the program is executed the steps below will take placethe script calcandprintarea starts executingthe calcandprintarea calls
modular programsin a modular program the answer is broken down into modules and each is executed as a function the script is usually known as the
help functionfunction is computing the two values there are two output arguments in the function header ie area amp circum that are placed in the
user-defined functionstherefore although many functions compute and return values some do not a few functions rather merely accomplish a task
types of user-defined functionswe know how to write a user-defined function stored in an m-file which computes and returns one value this is merely
user input in the while loophere is an illustration of running this scriptgtgt readonenumenter a positive number -5invalid enter a positive number
program to counting in a while loopthe script initializes variable counter to 0 then in the while loop action each and every time the user
use of while loophere is an illustration of calling the function passing 5000 for the value of the input argument highgtgt factgthigh5000ans 5040the
while loopsthe while statement is used as a conditional loop in matlab it is used to repeat an action whenever ahead of the time it is not known how
illustration of logical built-in functionsthe function find returns the indices of a vector which meet certain criteria for illustration to find all
logical built-in functionsthere are built-in functions in the matlab which are useful in conjunction with vectors or matrices of all logical true or
illustration of logical vectorscalling the function appears to return similar vector as simply vec gt 5 and summing the result still works to
example of vectorizinglikewise for an operation on a matrix a nested loop would be needed for illustration supposing a matrix variable matr c
vectorizingin most of the cases in matlab loops are not essential as matlab is written specifically to work with the vectors and matrices most
illustration of nested for loops and the if statementsfor illustrationwhen the file contains33 -11 2 4 5
illustration of nested loopsrunning the script shows the outputgtgt printstarsthe variable rows identifies the number of rows to print and the
for loops which do not use an iterator variable in the actionin all the illustrations that we seen so far the value of the loop variable has been
illustration of for loopillustration to print a column of numbers from 1 to 5for i 15fprintfdniend this loop can be entered in the command window
for loopthe for loop or the for statement is used whenever it is essential to repeat statements in the script or function and whenever it is known