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C++ Fundamental Data Types

Explore data types, memory usage, and binary representations

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Memory Used
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Key Concepts

Data Types

Tell the compiler how to interpret memory contents

Memory Size

Different types use different amounts of memory (bytes)

Binary Storage

Values are stored as sequences of bits (0s and 1s)

Type Variable Creator
Create variables with different data types

Standard integer

int(4 bytes)
Range: -2,147,483,648 to 2,147,483,647
Fundamental Data Type Categories
Overview of C++ built-in data types organized by category

integral Types

Whole numbers without decimal points

short
2B
int
4B
long
8B

floating Types

Numbers with decimal points

float
4B
double
8B

character Types

Text characters and strings

char
1B
std::string
32B

boolean Types

True or false values

bool
1B
Your Variables (0)
Manage your typed variables with memory details

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Memory Layout Visualization
Visual representation of memory usage by data types

Memory visualization will appear here

Create variables to see memory layout!

Generated C++ Program
Complete program with your typed variables
#include <iostream>
#include <string>
using namespace std;
int main() {
    // No variables declared yet
    return 0;
}
Achievements
Track your data type mastery progress
🔍
Type Explorer
Create your first typed variable
💾
Memory Manager
Understand memory allocation for different types
01010
Binary Master
View binary representation of values
🗂️
Type Collector
Use all fundamental data type categories
📏
Size Optimizer
Create variables totaling 32+ bytes
Type Operations0/5
Track your data type actions

No operations yet

Start by adding or modifying elements

Data Type Best Practices
🎯 Choose Wisely

Use int for whole numbers, double for decimals, bool for true/false, char for single characters.

💾 Memory Efficiency

Smaller types use less memory. Use short for small numbers, long for very large ones.

⚡ Type Safety

C++ prevents mixing incompatible types. You can't directly add a string and integer.

🔢 Value Ranges

Each type has limits. int can't hold numbers beyond ±2 billion. Use long for bigger values.