# dc command in Linux with examples

**dc** command in Linux is used to evaluate arithmetic expressions. It evaluates expressions in the form of a postfix expression. Entering a number pushes it into the stack and entering an operator evaluates an expression and pushes the result back into the stack. It can evaluate +, -, /, *, %, ^. Different commands can be used to manipulate stack.

**Syntax:**

dc [OPTION] [file ...]

*Below table illustrate the different commands and their explanation:*

Command | Operation |
---|---|

p | Prints the value on the top of the stack and ends the statement with a newline. |

n | Prints the value on the top of the stack and ends the line with a null statement. |

f | Prints the entire stack, without any alteration. |

P | Pops the value from the top of the stack. |

c | Clear the stack. |

d | Duplicates the top value and push it into the main stack. |

r | Reverses the order of top two elements in the stack. |

Z | Pops the value from the stack, calculate the number of digits in it and pushes that number. |

X | Pops the value from the stack, calculate the number of fraction digits in it and pushes that number. |

z | Pushes the stack length into the stack. |

i | Pops the value from the stack and uses it as input radix. |

o | Pops the value from the stack and uses it as output radix. |

k | Pops the values from the stack and uses it to set precision. |

I | Pushes the value of input radix into the stack. |

O | Pushes the value of output radix into tje stack |

K | Pushes the precission value into the stack. |

**Example 1:**

**Example 2:**

**Note:** In second example, the output changes because we changed the output-radix.

**Options:**

**expression**: This command is used to evaluate a particular expression.**file**: This command is used to evaluate the contents of the file.**help**: This command displays help information.**version**: This command is used to display version information.