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Return to int, C++ Reserved words, C++, Reserved Words, CPP Glossary, CPP Topics

Here's an in-depth comparison of the C++ `int` keyword to its equivalent in Python, Java, C#, Kotlin, JavaScript, TypeScript, PHP, Go, Rust, Swift, Transact-SQL, and PL/SQL. This comparison will delve into the nuances of integer representation and usage across these languages, complete with code examples and documentation references, all formatted in MediaWiki syntax.

1. C++

In C++, `int` is a fundamental data type used for representing 32-bit signed integers by default, though the exact size can vary based on the platform. It's a core part of the language's type system.

```cpp int a = 10; // C++ integer declaration ```

C++ documentation: s://en.cppreference.com/w/cpp/language/types(https://en.cppreference.com/w/cpp/language/types)

1. Python

Python does not require explicit type declaration. Its `int` type can store integers of unlimited magnitude (as long as memory allows).

```python a = 10 # Python automatically understands this as an integer ```

Python documentation: s://docs.python.org/3/library/stdtypes.html#numeric-types-int-float-complex(https://docs.python.org/3/library/stdtypes.html#numeric-types-int-float-complex)

1. Java

Java's `int` type is a 32-bit signed integer, which is part of its primitive type system.

```java int a = 10; // Java integer declaration ```

Java documentation: s://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html(https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html)

1. C#

C# defines `int` as a 32-bit signed integer in its type system, similar to Java.

```csharp int a = 10; // C# integer declaration ```

C# documentation: s://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/integral-numeric-types(https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/integral-numeric-types)

1. Kotlin

Kotlin also uses `int` to represent a 32-bit signed integer. Type inference allows omitting the type when it's clear from the context.

```kotlin var a = 10 // Kotlin understands this as an integer ```

Kotlin documentation: s://kotlinlang.org/docs/basic-types.html#numbers(https://kotlinlang.org/docs/basic-types.html#numbers)

1. JavaScript

JavaScript does not have an `int` type; instead, it uses `Number` for all numeric values, which are IEEE 754 double precision floating-point.

```javascript var a = 10; // JavaScript Number type ```

JavaScript documentation: s://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#number_type(https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#number_type)

1. TypeScript

TypeScript, enhancing JavaScript, also doesn't have an `int` type, using `number` for all numeric representations.

```typescript let a: number = 10; // TypeScript number type ```

TypeScript documentation: s://www.typescriptlang.org/docs/handbook/basic-types.html#number(https://www.typescriptlang.org/docs/handbook/basic-types.html#number)

1. PHP

PHP dynamically determines variable types; `int` is inferred based on the context.

```php $a = 10; // PHP integer ```

PHP documentation: s://www.php.net/manual/en/language.types.integer.php(https://www.php.net/manual/en/language.types.integer.php)

1. Go

Go has a type `int`, which is platform-dependent and can be either 32 or 64 bits.

```go var a int = 10 // Go integer declaration ```

Go documentation: s://golang.org/pkg/builtin/#int(https://golang.org/pkg/builtin/#int)

1. Rust

Rust offers various integer types; `i32` is the default integer type, representing a 32-bit signed integer.

```rust let a: i32 = 10; // Rust integer declaration ```

Rust documentation: s://doc.rust-lang.org/book/ch03-02-data-types.html#data-types(https://doc.rust-lang.org/book/ch03-02-data-types.html#data-types)

1. Swift

Swift's `Int` is platform-dependent, typically 32-bit on 32-bit platforms and 64-bit on 64-bit platforms.

```swift var a: Int = 10 // Swift integer declaration ```

Swift documentation: s://docs.swift.org/swift-book/LanguageGuide/TheBasics.html#ID320(https://docs.swift.org/swift-book/LanguageGuide/TheBasics.html#ID320)

1. Transact-SQL

Transact-SQL uses `INT

` to declare a 32-bit integer.

```sql DECLARE @a INT = 10; – Transact-SQL integer declaration ```

Transact-SQL documentation: s://docs.microsoft.com/en-us/sql/t-sql/data-types/int-bigint-smallint-and-tinyint-transact-sql(https://docs.microsoft.com/en-us/sql/t-sql/data-types/int-bigint-smallint-and-tinyint-transact-sql)

1. PL/SQL

PL/SQL treats `NUMBER` without precision as capable of storing integers (among other numeric types), though not explicitly an `int` type.

```plsql DECLARE

 a NUMBER := 10; -- PL/SQL integer declaration

PL/SQL documentation: s://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements001.htm#i54330(https://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements001.htm#i54330)

This overview shows that while most of these languages have a direct equivalent to C++'s `int`, the specifics of how they are implemented and used can vary significantly, reflecting the diversity of approaches to type systems in programming languages.

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