Explanation of code snippet

Hello everyone,

could somebody tell me what this snippet of code does?

Code:

---

    a = cmd & MISSILE_LAUNCHER_CMD_LEFT ? 1 : 0;
    b = cmd & MISSILE_LAUNCHER_CMD_RIGHT ? 1 : 0;
    c = cmd & MISSILE_LAUNCHER_CMD_UP ? 1 : 0;
    d = cmd & MISSILE_LAUNCHER_CMD_DOWN ? 1 : 0;
    e = cmd & MISSILE_LAUNCHER_CMD_FIRE ? 1 : 0;

---

I think this is a sort of if statement but even then i dont know how it works.

Thanks for your help,

Jelte.

They are conditional expressions. If the expression before the ? is true, then the value between the ? and : is assigned, if the expression is false, then the value after the : is assigned.

Code:

---

if (a>b)
{
      c=10;
 }
 else
{
      c=20;
 }

---

Can be replaced with:

Code:

---

(a>b) ? (c=10) : (c=20);

---

Which in turn can be written as:

Code:

---

c = (a>b) ? 10 : 20;

---