Program to Count numbers on fingers

Count the given numbers on your fingers and find the correct finger on which the number ends.

- The first number starts from the thumb, second on the index finger, third on the middle finger, fourth on the ring finger, and fifth on the little finger.
- Again six comes on the ring finger and so on.
- Here we observer a pattern, 8(last number) and 2 ends up in 2nd position, 3rd or 7th on the middle finger, and so on.
- The pattern keeps repeating after every 8 numbers
- 1 to 8
- 9 to 16
- 17 to 24, and so on

**Examples:**

Input : 17 Output :1 Input :27 Output :3

## C++

`// CPP Program to Count numbers on fingers` `#include <iostream>` `using` `namespace` `std;` `int` `count_num_finger(` `int` `n)` `{` ` ` `int` `r = n % 8;` ` ` `if` `(r == 0)` ` ` `return` `2;` ` ` `if` `(r < 5)` ` ` `return` `r;` ` ` `else` ` ` `return` `10 - r;` `}` `// Driver code` `int` `main()` `{` ` ` `int` `n;` ` ` `n = 30;` ` ` `cout << count_num_finger(n);` ` ` `return` `0;` `}` |

## Java

`// Java Program to Count numbers on fingers` `class` `GFG` `{` `static` `int` `count_num_finger(` `int` `n)` `{` ` ` `int` `r = n % ` `8` `;` ` ` `if` `(r == ` `0` `)` ` ` `return` `2` `;` ` ` `if` `(r < ` `5` `)` ` ` `return` `r;` ` ` `else` ` ` `return` `10` `- r;` `}` `// Driver Code` `public` `static` `void` `main(String[] args)` `{` ` ` `int` `n;` ` ` `n = ` `30` `;` ` ` `System.out.println(count_num_finger(n));` `}` `}` `// This code is contributed` `// by Mukul Singh` |

## Python3

`def` `count_num_finger( n ):` ` ` `r ` `=` `n ` `%` `8` ` ` `if` `r ` `=` `=` `0` `:` ` ` `return` `2` ` ` `if` `r < ` `5` `:` ` ` `return` `r` ` ` `else` `:` ` ` `return` `10` `-` `r` `# Driver Code` `n ` `=` `30` `print` `(count_num_finger(n))` `# This code is contributed by "Sharad_Bhardwaj".` |

## C#

`// C# Program to Count numbers on fingers` `using` `System;` ` ` `class` `GFG` `{` ` ` `static` `int` `count_num_finger(` `int` `n)` `{` ` ` `int` `r = n % 8;` ` ` `if` `(r == 0)` ` ` `return` `2;` ` ` `if` `(r < 5)` ` ` `return` `r;` ` ` `else` ` ` `return` `10 - r;` `}` `// Driver Code` `public` `static` `void` `Main(String[] args)` `{` ` ` `int` `n;` ` ` `n = 30;` ` ` `Console.WriteLine(count_num_finger(n));` `}` `}` `// This code is contributed by Princi Singh` |

## PHP

`<?php` `function` `count_num_finger( ` `$n` `)` `{` ` ` `$r` `= ` `$n` `% 8;` ` ` `if` `(` `$r` `== 2)` ` ` `return` `0;` ` ` `if` `(` `$r` `< 5)` ` ` `return` `$r` `;` ` ` `else` ` ` `return` `10 - ` `$r` `;` `} ` `// Driver Code` `$n` `= 30;` `echo` `(count_num_finger(` `$n` `));` `// This code is contributed` `// by Aman Ojha` `?>` |

## Javascript

`<script>` ` ` `// Javascript Program to Count numbers on fingers` ` ` ` ` `function` `count_num_finger(n)` ` ` `{` ` ` `let r = n % 8;` ` ` `if` `(r == 0)` ` ` `return` `2;` ` ` `if` `(r < 5)` ` ` `return` `r;` ` ` `else` ` ` `return` `10 - r;` ` ` `}` ` ` ` ` `let n;` ` ` `n = 30;` ` ` `document.write(count_num_finger(n));` ` ` `// This code is contributed by mukesh07.` `</script>` |

**Output:**

4

Asked in Paytm Campus Placement August 2017

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