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Professor
Rafa
ReneOh, dude, numeric constants are like numbers, you know, they're all about math and stuff, whereas string constants are like words, they're for when you wanna talk with your computer in a language it understands. So, like, numbers vs. words, man, it's not rocket science, just computer science.
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Is o3333 a rational number?
No, it is an alphanumeric string: the first character is not a numeric digit.
How do you define a constant in PHP?
You can define a constant using the define() directive.you can use this a number of ways;to define a variable to a constant do:$string = "hello";define("string",$string);to define a string to a constant use:define("hello","there");to define a integer or other numerical value use:define("number",1.0);Summery:to define a string use quotes as you would do a string.Unlike variables in PHP a constant cannot be changed or undefined once it is defined. Constant remains automatically globally throughout the script. It means that it can be accessed from inside a function. e.g.
What is Numeric characters?
a digit (number) as opposed to a letter--
What is the Difference between attribute and property?
Here's my opinion:Not much really; from a programming perspective I would say the following ...Property: for example the length of a String i.e. String.Length Generally you do not set itAttribute: for example the Value of a String i.e. String str = "a string" Generally you would set it>>>>>>>>>>>>>>>- attributes: are _given_ by the human to an object- properties: are _natural_ aspects of an object.amanpreet
What is the difference between 3 inches and 3 square inches?
3 inches is the length of something, like a piece of string or spaghetti.3 square inches is the area that something covers, like a postage stamp, a playing card, or a puddle.
