Online assembler/C compiler with visualization?

Question

assembler

There are many online compilers for assembler and C / C ++, but my question is - is there a compiler somewhere with debugging and visual visualization of the state of registers / memory? Is such a miracle even possible?

So that by executing the program in asm / C line by line, one could see what is in the registers, in memory and how it changes.

Answer 1

This thing is called a debugger :)

Answer 2

No, of course, so that you run viruses on them - look for a fool.