MATLAB Object-Oriented Programming

MATLAB executes a statement that returns a value and is not terminated with a
semicolon.

There is no left-side variable, then MATLAB prints ans = followed by the value.

Code explicitly invokes the display function.

When invoking display:

If the input argument is an existing variable, display prints the variable name and
equal sign, followed by the value.

If the input is the result of an expression, display does not print ans =.

MATLAB invokes the built-in disp function when the following occurs:

The built-in display function calls disp.

Code explicitly invokes disp.

For empty built-in types (numeric types, char, struct, and cell) the display function
displays:

[] — for numeric types

"0x0 struct array with no fields." — for empty structs.

"0x0 empty cell array" — for empty cell arrays.

"0x0 empty char array" — for empty char arrays

"0x0 empty string array" — for empty string arrays

disp differs from display in these ways:

disp does not print the variable name or ans.

disp prints nothing for built-in types (numeric types, char, struct, and cell) when
the value is empty.