CPP Tutorial

C++ DATA TYPES

📊 Data Types in C++

In C++, data types tell the compiler what kind of data a variable will store. Different data types help the program use memory efficiently and understand how to handle the data.

Basic Data Types

Data Type	Description	Example
`int`	Stores whole numbers (integers) like -10, 0, 100.	int age = 25;
`float`	Stores decimal numbers with single precision.	float price = 99.99;
`double`	Stores decimal numbers with double precision (more accurate than float).	double pi = 3.14159;
`char`	Stores a single character like 'A', 'z', or '9'.	char grade = 'A';
`bool`	Stores only two values: `true` or `false`.	bool isPassed = true;
`string`	Stores a sequence of characters (text).	string name = "Alice";

Example Program Using Different Data Types

#include <iostream>
#include <string>

using namespace std;

int main() {
  int age = 21;
  float height = 5.7;
  double weight = 68.5;
  char grade = 'A';
  bool isStudent = true;
  string name = "Ravi";

  cout << "Name: " << name << endl;
  cout << "Age: " << age << endl;
  cout << "Height: " << height << " feet" << endl;
  cout << "Weight: " << weight << " kg" << endl;
  cout << "Grade: " << grade << endl;
  cout << "Is Student? " << isStudent << endl;

  return 0;
}

Note

To use string, you need to include the <string> library. For input/output operations, include <iostream>.

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