# Difference between Variables and Constants

May 8, 2023

**The key difference between variables and constants is** that a variable is a value that can change, while a constant is a value that does not change.

**Variables Vs Constants**

Variable | Constant |

A variable is a value that can change. | A constant is a value that does not change. |

The value of a variable is not fixed and can be altered. | The value of a constant is fixed and cannot be altered. |

Variables are represented by symbols such as x, y, or z. | Constants are represented by symbols such as π, e, or c. |

A variable is typically used in mathematical equations to represent unknown values. | A constant is typically used in mathematical equations to represent fixed values. |

The value of a variable is dependent on other factors or variables. | The value of a constant is independent and does not depend on any other factors or variables. |

Variables can have different values in different contexts or situations. | Constants always have the same value, regardless of the context or situation. |

The value of a variable can be assigned or reassigned during the execution of a program or script. | The value of a constant is defined once and remains constant throughout the execution of a program or script. |

**7 Difference between variable and constant**

- A variable is a value that can change, while a constant is a value that does not change.
- The value of a variable is not fixed and can be altered, whereas the value of a constant is fixed and cannot be altered.
- Variables are represented by symbols such as x, y, or z, while constants are represented by symbols such as π, e, or c.
- A variable is typically used in mathematical equations to represent unknown values, whereas a constant is typically used in mathematical equations to represent fixed values.
- The value of a variable is dependent on other factors or variables, while the value of a constant is independent and does not depend on any other factors or variables.
- Variables can have different values in different contexts or situations, while constants always have the same value, regardless of the context or situation.
- The value of a variable can be assigned or reassigned during the execution of a program or script, whereas the value of a constant is defined once and remains constant throughout the execution of a program or script.

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