handling With a message in MATLAB

In MATLAB, the try statement is used to detect exceptions that occur during the execution of a program. If an exception occurs, the control is transferred to the catch statements that follow the try statement. Here is a general syntax for using try/catch/finally with messages in MATLAB:

try
    % Code that may produce an exception
catch exception
   % Handle the exception
   disp(['Error: ' exception.message]);
finally
   % Clean up code that executes whether or not an exception occurs
end

Here, the try block contains the code that may throw an exception. If an exception occurs, the control is transferred to the catch block where the exception is handled. The finally block contains the cleanup code that should execute regardless of whether or not an exception occurs.

In the example below, we will create a script called divide_numbers.m that divides two numbers entered by the user. If the denominator is zero, a custom error message will be displayed.

numerator = input('Enter the numerator: ');
denominator = input('Enter the denominator: ');
try

    result = numerator/denominator;

catch exception

    disp(['Error: ' exception.message]);

finally 

    disp('Execution complete');

end

If the user enters a denominator of zero, the program will raise an exception with the message "Divide by zero." The catch block will handle the exception and display a custom error message. The finally block will always execute and display a message indicating that the execution is complete.

Output:

Enter the numerator: 10

Enter the denominator: 0

Error: Divide by zero.

Execution complete