For example, iterating and adding stuff to arrays:
array[index++] = object;
instead of
array[index] = object; index += 1;
and the other way around:
array[++index] = object;
instead of:
index += 1; array[index] = object;
There is no way you will miss incrementing your index here, or do it in the wrong place. This is so common, that as a C-programmer you WILL recognize this pattern.
It's even better when iterating pointers instead of integers. May I ask what the following means to you?
float *float_ptr; float_ptr += 1;
I think writing ++float_ptr here is just much more clear. Incrementing pointers by integers just feels wrong when what you really are doing is incrementing it with sizeof(float_ptr).