How does the computer understand that the number is unsigned?

Question

assembler

I want to figure out what happens when I enter unsigned, because the memory cell remains the same size. How does he understand that it must be read exactly as unsigned? Does it have a list of unsigned variables that should be read unsigned or what?

Answer 1

"Understands" the C++ compiler. When compiling, it translates the program into machine code, including taking into account the declared types of variables.
When executing the program, no "understanding" is required anymore, all actions are specified in the code.