What is the difference between clc and clear all in Matlab?

The help for both are quite thorough.

In short:

clc - clears the command window

clear all clears variables, but it also clears a lot of other things from memory, such as breakpoints, persistent variables and cached memory - as your new to Matlab this is probably a bit unclear.

In short: You rarely need to use clear all - most of the time a simple clear will be enough.

No, both are not same. There's a difference.

clear all is basically used to clear/delete the variables created in Workspace.

clc is basically used to clear the Command Window (where we execute MATLAB commands).

---

» clc

It clears Command Window.

clc clears all input and output from the Command Window display, giving you a "clean screen".

After using clc, you cannot use the scroll bar to see the history of functions, but you still can use the up arrow key, ↑, to recall statements from the command history.

Reference link to read more about clc command.

» clear

It removes items from workspace, freeing up system memory.

clear removes all variables from the current workspace, releasing them from system memory.

Reference link to read more about clear command.

» clear all

It clears Variable in scope, Scripts and functions, Persistent variables, MEX functions, Global variables etc.

Note: Calling clear all decreases code performance, and is usually unnecessary. For more information, see the Tips section.

Reference link to read more about clear all command.

» close

• It removes specified figure.

• It deletes the current figure or the specified figure(s). It optionally returns the status of the close operation.

• It deletes the current figure (equivalent to close(gcf)).

Reference link to read more about close command.

» close all

It deletes all figures whose handles are not hidden.

Reference link to read more about close all command.

Thanks.