C++ Data Types

Overview

Data types are the foundation of programming languages, defining the types of data variables can store and the operations that can be performed on this data. C++ provides rich built-in data types and also supports user-defined types.

🏗️ Data Type Classification

Data Type Hierarchy

mermaid

graph TD
    A[C++ Data Types] --> B[Basic Types]
    A --> C[Compound Types]
    A --> D[User-defined Types]
    
    B --> B1[Integer Types]
    B --> B2[Floating Point Types]
    B --> B3[Character Types]
    B --> B4[Boolean Types]
    B --> B5[Void Type]
    
    C --> C1[Arrays]
    C --> C2[Pointers]
    C --> C3[References]
    
    D --> D1[Structures]
    D --> D2[Classes]
    D --> D3[Enumerations]

🔢 Integer Types

Basic Integer Types

cpp

#include <iostream>
#include <climits>

int main() {
    // Basic integer types
    short short_var = 32767;
    int int_var = 2147483647;
    long long_var = 2147483647L;
    long long long_long_var = 9223372036854775807LL;
    
    // Unsigned integer types
    unsigned short ushort_var = 65535;
    unsigned int uint_var = 4294967295U;
    unsigned long ulong_var = 4294967295UL;
    
    // Output type sizes and ranges

C++ Data Types ​

Overview ​

🏗️ Data Type Classification ​

Data Type Hierarchy ​