Int: Difference between revisions
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== Signed and unsigned == | == Signed and unsigned == | ||
There is a deeper conversation about signed and unsigned numbers. You should know this: | |||
* A signed number can be positive or negative | * A signed number can be positive or negative | ||
* An unsigned number can only be positive | * An unsigned number can only be positive | ||
== Difference between an int and a float == | == Difference between an int and a float == | ||
Revision as of 07:29, 6 August 2017
Programming basics[1]
Int (signed integers): They are often called just integers or ints, are positive or negative whole numbers with no decimal point.[2]
Signed and unsigned[edit]
There is a deeper conversation about signed and unsigned numbers. You should know this:
- A signed number can be positive or negative
- An unsigned number can only be positive
Difference between an int and a float[edit]
Integers and floats are two different kinds of numerical data. An integer (more commonly called an int) is a number without a decimal point. A float is a floating-point number, which means it is a number that has a decimal place. Floats are used when more precision is needed.[3]
Example[edit]
In PHP: You will remember PHP isn't a strictly typed language (although it can be set to be).
<?php
$a = 1234; // decimal number
$a = -1234; // a negative number
?>
In Python:
# decimal number:
a = 1234
# a negative number:
a = -1234
In Javascript:
// decimal number:
var a = 1234;
// a negative number:
var a = -1234;
Do you understand this?[edit]
Standards[edit]
- Define the terms: variable, constant, operator, object.