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Working with Numbers in C++

C++ supports various numeric data types for handling numbers, including integers and floating-point numbers.

Key Topics

Integers

Integers are whole numbers without a fractional part. The int data type is used to declare integer variables.

Example: Integer Variables

int age = 30;
int year = 2023;

Explanation: Variables age and year are declared as integers and assigned whole number values.

Key Takeaways

  • Use int for whole numbers.
  • Be aware of the range of values an int can hold.

Floating-Point Numbers

Floating-point numbers are numbers with a fractional part. Use float or double to declare such variables.

Example: Floating-Point Variables

float temperature = 36.6f;
double pi = 3.1415926535;

Explanation: Variable temperature is a float, and pi is a double, representing numbers with decimal points.

Key Takeaways

  • Use float or double for decimal numbers.
  • double offers more precision than float.
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