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iOS Objective-C Basics (Retired) Fundamentals of C Operators & Expressions

Wich is a compact division the Quizz No. 5?

I intented 3 forms of the division learninf from the video and my result is wrong ...

2 Answers

Andrew Pope
Andrew Pope
11,915 Points

Hi Erick!

Say we had the value 3 assigned to an integer variable called a. Now we want to add 4 on to a. We could do it like this:

int a = 3;
a = a + 4;  // This is one way to add 4 to the integer variable a.

This is fine, however we can do it slightly differently and make our code more compact.

int a = 3;
a += 4; // This is the compact way of doing it.

In C/C++/Objective-C, the basic mathematical operators have their own compact notation, for example.

a += 3;  // This is the compact form of a = a + 3
a -= 3;  // This is the compact form of a = a - 3
a *= 3;  // This is the compact form of a = a * 3

and finally (although I'm sure you have guessed it already!),

a /= 3; // This is the compact form of a = a/3  (So the compact form of division)

Basically, it's a way of saying "Hey, divide a by 3, then make sure that a is set to this new value".

I hope this helps!

Andy.

Hi Andy

I'm newbie in the concepts of C ... and TreeHouse is the best solution for learning in this area, Thanks you very much for the response.and the help.

Erick