Use QT Creator as main IDE/GUI: Create a graphical user interface using code not the UI shortcut for widgets, that repr

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Use QT Creator as main IDE/GUI:
Create a graphical user interface using code not the UI
shortcut for widgets, that represents a calculator. This calculator
must have functions for plus, minus, multiply divide, square, sin,
cos,tan. as well as in memory adition, subtraction and clear (M+.
M-. MC) and reset (C).
Let the buttons on the user interface activate the relevant
functions in code that must
handle their actions.Implement a keyboard routine, so that the
colculator can also be operated from the
keyboard with at least keys 0-9 and .+-*/ as well as enter and
backspace.
Implement the logic of the calculator so that it works right.
Operations that need two
numbers, such as plus and minus, must work with the current and the
previous numbers,
but operations that only need one number, such as square, must use
only the current number
on the screen
Let the calculator perform a visual action to draw attention
when it has not been used
for 30 seconds.