Incrementing and Decrementing - Just Trying to Understand

[OriginalGriff]

Ok, let's look at it (though it's a PITA to work out, I admit) and substitute the values:

int x = 10;
int y = 100;
int z = ++x + (y++ * x);

1. ++x means "add one to x and use the new value", so x becomes 11, and the calculation becomes

z = 11 + (y++ * x)

2. y++ means "Add one to y and use the old value", so y becomes 101, and the calculation becomes

z = 11 + (100 * x)

3. We only have x left to worry about, so get the current value of it (which is 11 because we changed it in step 1) and the calculation becomes

z = 11 + (100 * 11)

Which is

z = 11 + 1100

Or

z = 1111

So the final result is:

x = 11, y = 101, z= 1111

This is a lot more complex than anything you should have to meet in "real life" (hence the discussion above about hitting people who do that kind of thing and why C++ will give you different results)

The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

[N8tiv]

okay, it is relieving I was only off by one My Coding Journey

[OriginalGriff]

Welcome to the "I hit people who do that" club - your laminated membership card is in the post... :laugh:

The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

[N8tiv]

wait a minute? Who gets 10/10 for being correct? OG or Me? My Coding Journey