Often times, a program accepts input from a user, and needs to check the validity of the input, and then produce useful and informative error messages if the input is invalid. Suppose that uiVal is a variable representing the user's input, and that errorCode is an 1-by-0 empty array. Write MATLAB code that appends (horizontal concatenation) to errorCode various identifying integers depending on certain conditions as follows: • appends 1, if uiVal is not a numeric, real-valued array
• appends 2, if uiVal is not all integer valued. Note that if uiVal is not numeric, real-valued (as is checked in the rst item) then this condition should not be checked, since checking it may result a MATLAB error.
• appends 3, if any values of uiVal are less than 1 or greater than 6. Note that if uiVal is not numeric, real-valued (as is checked in the rst item) then this condition should not be checked, since checking it may result a MATLAB error.
• appends 4, if uiVal is not 2-dimensional (read about ismatrix and ndims) or it's size is not equal to 1-by-4.
Note that depending on uiVal, several of these conditions can be true, and all appropriate integers should be appended to errorCode. Useful commands to examine are: ismatrix, isnumeric, isreal, floor, ceil, size, all.