C++ Variables

C++ Variables

Variables are like containers for storing data values. In C++, there are different types of variables based on what type of data they hold.

Declaring Variables

To create a variable, you must specify the type and assign it a value: type variableName = value;

Here are common variable types:

• int: Stores integers (whole numbers), without decimals, such as 123 or -123.
• double: Stores floating point numbers, with decimals, such as 19.99 or -19.99.
• char: Stores single characters, such as 'a' or 'B'.
• string: Stores text, such as "Hello World".
• bool: Stores values with two states: true or false.

Example Usage

#include <iostream>
#include <string>
using namespace std;

int main() {
  int myNum = 15;
  double myFloatNum = 5.99;
  char myLetter = 'D';
  string myText = "Hello";
  bool myBoolean = true;
  cout << myNum << "\n";
  cout << myText << "\n";
  return 0;
}

Variable names must start with a letter or an underscore, and they are case-sensitive.