Input and Output Operations in Matlab

Let me tell you something about the input and output operations in Matlab.

What are input/output instructions? You see, there are these instructions that allow you to display data on the screen or ask the user to enter data using the keyboard. These are what we call the input/output instructions.

Now, if you want to print data or text on the screen, you simply use the disp() function.

For instance, you can type disp("hello world").

>> disp("hello world")

The content you've written in parentheses will appear on the screen.

hello world

The disp() function is designed to print the string on the screen and end with a newline.

On the other hand, if you want the user to enter data using the keyboard, you can use the input() function.

This will prompt the user to enter data using the keyboard, and when they press enter, Matlab will display the text "enter a number" and wait for them to enter something.

If you wish to store the data entered by the user in a variable, simply type:

>> number = input("enter a number")

This way, the data entered will be stored in the variable "number", and you can manipulate it using other instructions.

Just bear in mind that if the data you want to enter is a string, you need to add 's' as the second parameter of the input() function.

Just take this simple script, for example, which greets the user by name:

>> name = input("What's your name?","s");

With the input() and disp() functions, you can create interactive scripts that personalize the messages on the screen. It's easy-peasy, really.

name = input("What's your name?","s");
disp("Hello " + name);

When you run this script, Matlab will prompt the user to enter their name, store the entered data in the variable "name", and print a personalized welcome message on the screen.

And that is how you can create interactive scripts and programs of any kind that exchange data with the user.