Dark Horse programmer--"Dark Horse video note" C-language basis of the self-increment-decrement operator and considerations

1. Specific usage

   1:  int b;

   2:      int a = 10;

   3:      //b = ten +;

   4:      //b = (a++) + (++a);

   5:      

   6:      //b = one + one;

   7:      b = (++a) + (a++);

   8:      //a -one

   9:      

  10:      

One   :      //A:12

  :      printf ("b=%d, a=%d\n", B, a);

2. The difference between "++a" and "a++"

Add in front and add after

3. Questions about Lvalue ("left value")

   1:  int A;

   2:  (-a) + +;

This code is wrong, because "-a" is not a variable, cannot be assigned, it cannot be added by itself.

We call "-a" only the right value, not the left value.

Dark Horse programmer--"Dark Horse video note" C-language basis of the self-increment-decrement operator and considerations