# Int

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

There is a deeper conversation about signed and unsigned numbers. You should know this:

- A signed numberA unit of abstract mathematical system subject to the laws of arithmetic. can be positive or negative
- An unsigned numberA unit of abstract mathematical system subject to the laws of arithmetic. can only be positive

## Difference between an int and a float

Integers and floats are two different kinds of numerical data. An integerA natural number, a negative of a natural number, or zero. (more commonly called an int) is a numberA unit of abstract mathematical system subject to the laws of arithmetic. without a decimal point. A float is a floating-point numberA unit of abstract mathematical system subject to the laws of arithmetic., which means it is a numberA unit of abstract mathematical system subject to the laws of arithmetic. that has a decimal place. Floats are used when more precision is needed.^{[3]}

## Example

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?

## Standards

- DefineGive the precise meaning of a word, phrase, concept or physical quantity. the terms: variable, constant, operator, object.