Is assembly language slow?

Short answer: yes. Long answer: yes, unless you really know what you’re doing, and have a reason to do so. The assembly code in release mode is almost 2 times faster than the C++.

Which is faster assembler or compiler?

On average the compiler will do far better than a human for a large project, but it is not hard in a decent sized project to find performance issues in the compiled code. Actually, the short answer is: Assembler is always faster or equal to the speed of C.

Is assembly language compiled?

Assembly language is a machine level language. Machines can run them directly, so there is no need of any compilers or interpretors. So assembly is neither compiled nor interpreted.

Is hand-written assembly faster than high-level language code?

Your question starts from a false assumption: Hand-written assembly is not necessarily faster than higher-level language code. This is a fact that was actually known and tested in 1978 when I first started working professionally in compilers. The folks at SofTech (where I worked) measured the speed and size of programs for guiding missiles.

What is the result of the assembly language?

The result. At the initial release, assembly language programs were about 25\% smaller and faster. After two years of maintenance, the statistics reversed. The assembly language programs were about 25\% larger and slower. The reason why is important.

Why are compiled languages faster than written languages?

A very good assembly language programmer – working very hard – can write better code than the compiler over short stretches of code – but keeping up that standard over longer pieces of code rapidly becomes impossible. So for programs of any size – compiled languages are considerably faster than anything a human can do.

Can a human programmer write better code than a compiler?

Decades ago – a good human programmer could write better assembly language code than the compiler could – so you’d use human written assembly language where speed was super-critical. Gradually, though – compilers are getting smarter – and for the last 20 years or so, it’s become almost impossible for a human programmer to out-do the compilers.