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creativ13 [48]
3 years ago
14

Suppose you are working on a team using object-oriented programming, and your supervisor observes you creating new objects. She

tells you there is an easier way to create objects by making copies. What is your supervisor teaching you?
Computers and Technology
1 answer:
o-na [289]3 years ago
3 0
The correct way to observe and create something
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Which of the following is a valid variable name? 1. three com 2. 3com 3. 3 com 4. ampersand&amp;
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***Correction: <em>Options of the question have mistakes in them. The correct options are given in the comment section under the question above</em>***

Answer:

The correct answer is Option (1) three_com

Explanation:

There are a few rules you need to keep in mind while naming any variable, which are as follows:

  • The first letter of any variable name should be either a letter of an alphabet or an underscore. For example, helloWorld or _helloWorld.
  • No special characters (except underscore obviously) or spaces in between the name are allowed. For example, <em>hello&world</em> or <em>hello world</em> are not valid names.
  • The first letter of the variable name should not be a number.

Now look at all the options given:

Option-1 (three_com): The name starts with the letter <em>t</em> of an alphabet and there are no spaces or special characters in it except an <em>underscore</em> (which is acceptable). Therefore, this option is correct.

Option-2 (3com): The name starts with a number. Not allowed.

Option-3 (3_com): The name starts with a number. Not allowed.

Option-4 (ampersand&): The name has a special character <em>&</em> in it, which is not allowed as per the aforementioned rules.

Hence, the correct answer is option (1) <em>three_com</em>.

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