Int

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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

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.

References