#include<stdio.h> #include<conio.h> void main(){ int num,a=10; num=a--- -a--; printf("%d %d",num,a); }

Question

explain the output please

Answer 1

a--- - a--- means (a--)-(-(a--)) so what it does: 10-(-9)=19, a was decremented twice so a=8.

Answer 2

num=a--- ??
it should generate error🙇

Answer 3

the output is 20 8
I didn't get how is this?