0:00:00.430,0:00:05.899
Now we're going to learn about if statements. If statements are a fundamental part of learning

0:00:05.899,0:00:12.760
to program. They help a computer make decisions. All computers use if statements, including

0:00:12.760,0:00:19.310
my phone. For example, when I unlock my phone, it runs some code that says if I enter the

0:00:19.310,0:00:26.210
password correctly, then unlock the phone. Otherwise, it shows an error message.

0:00:26.210,0:00:30.880
You can use if statements in your code to make Steve and Alice react to what they see in

0:00:30.880,0:00:38.270
the world. For example, if there is a rock in front of them, they can turn left. Or turn

0:00:38.270,0:00:45.790
right if they run into a tree. In this case, we don't want to fall into the lava.

0:00:45.790,0:00:50.800
It's easy to plan for the lava. We can see it on the screen. But what about the lava that we

0:00:50.800,0:00:55.110
can't see under the stone? After we mine the stone, we'll need to check

0:00:55.110,0:01:02.110
if there's any lava in there before moving forward. If there is lava there, we want to

0:01:02.110,0:01:08.650
place a stone in front of our character before we move forward. That way we can safely move on.

0:01:08.650,0:01:15.500
Time for more mining! And remember to use the if statement to watch your step.