From Computer Science Wiki
Programming basics[1]

A float represents real numbers and is written with a decimal point dividing the integer and fractional parts. [2]

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]


In PHP: You will remember PHP isn't a strictly typed language (although it can be set to be).

$a = 1234.65; // decimal number
$a = -1234.54; // a negative number

In Python:

# decimal number:
a = 1234.65
# a negative number:
a = -1234.65

In Javascript:

// decimal number:
var a = 1234.65; 
// a negative number:
var a = -1234.65;


  • Define the terms: variable, constant, operator, object.