>> DAVID J. MALAN: So that last program had a bug whereby it reported that 0

>> DAVID J. MALAN: So that last program had a bug whereby it reported that 0 is negative, even though technically 0 is neither positive nor negative. But not a problem. We can fix this bug by inserting another condition into our program. >> Specifically, at line 12 I'm going to hit Enter. And then add else if and equals equals 0, open curly brace, close curly brace. >> Now you'll notice that I said and typed equals equals as opposed to just equals. Now that's simply because C is already using a single equal sign as the so-called assignment operator and in order to assign a value from the right to a, say, variable on the left. But in this case, we actually want to test n for equality with 0. And to do that in C, you simply have to remember to use two equal signs. >> Well, if n does indeed equal equal 0, I'm going to print out the following instead. Print F, you picked 0. Save my file. And now let's compile this as conditions 1. >> Back at my blinking prompt, I'm going to run the program with dot slash, conditions 1. And let's do that same sanity check again as before. 1 for my int, which is indeed positive. Let's rerun this as conditions 1 with a second input of, say, negative 1, which is indeed negative. >> Now let's test it with 0. dot slash, conditions 1. Enter. 0 and-- phew. I indeed picked 0 this time.