How to make pistol logic?

Question

Unity

there is a variable (how much in the store) and (how much in stock). and how to reload what if for exampleint ammo = 15int ammoLeft = 15

ammo = 10;
ammoLeft = 10;

therefore should be

ammo = 15;
ammoLeft = 5;

?

Answer 1

total = ammo + ammoLeft;
if((float)(total/15.0) == 1.0)
{
ammo = 15;
ammoLeft = 0;
} else if((float)(total/15.0)<1.0)
{
ammo = total;
ammoLeft = 0;
}else {
 // total/15 > 1, for example ammoLeft > 15
ammo = 15;
ammoLeft = total - 15;
}

Answer 2

It would be wise to make the number of stores, cartridges and cartridges in the store. Then, when reloading, simply update the cartridges and throw out the magazine.