Conditional operator “ ? : ”

Question

I\'ve done my programming exam in C yesterday. There was a question I could not answer, and even though I\'ve studied today I can\'t come up with a solution.

So we h

Answer 1

Why not to surprise your teacher with very detailed explanation of what is happening ;)

    ...
    mov     eax, dword ptr [rbp - 16]       ; get C
    xor     eax, -1                         ; negate C
    mov     ecx, dword ptr [rbp - 8]        ; get A
    mov     edx, ecx                        ; put A into edx
    add     edx, -1                         ; add -1 to edx => A--
    mov     dword ptr [rbp - 8], edx        ; store result inside A
    sub     eax, ecx                        ; substract from ~C what was the result of A--
    mov     dword ptr [rbp - 8], eax        ; store it inside variable A
    ...