void main(void)
  {
    int x = 10;
    int y, z;
    x *= y = z = 4;
  }
x=40
int x, y, z;
    x = 2; y = 1; z = 0;
    x = x && y || z;         
x=1
int x = 2, y = 1, z = 0;
    z += -x++ + ++y;
x,=3,y2,z=0
int x = 3, z = 0;
    z = x / ++x;
x=4,z indéfini
int x = 03, y = 02, z = 01;
int a, b;

    a = x | y & ~z;
    b = x ^ y & ~z;

a=3,b=1
int x = 01, y = -01;
int a;
    a = ~x | x;    
    y <<= 3;  
a=-1
y=-8
int x = 3, y = 2;
int a;
    a = x < y ? x++ : y++;
x=3
int x = -1, y = -1, z = -1;
int a;
    a = ++x && ++y || ++z;
y=-1