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# Program to compute division upto n decimal places

• Difficulty Level : Basic
• Last Updated : 20 Apr, 2021

Given 3 numbers x, y and n compute the division (x/y) upto n decimal places.
Examples :

```Input  : x = 22, y = 7, n = 10
Output : 3.1428571428
Explanation :
Since n = 10, division (x / y) is taken till
10 decimal places.

Input  : x = 22, y = 7, n = 20
Output : 3.14285714285714285714```

Approach :

1. Get the remainder and get it subtracted by the dividend, multiply it by ten and go to the next iteration.
2. If we reach the complete result, we may not need to continue until the pre-defined number of iterations are reached.

## C++

 `// CPP program to compute division upto n``// decimal places.``#include ``using` `namespace` `std;` `void` `precisionCompute(``int` `x, ``int` `y, ``int` `n)``{``    ``// Base cases``    ``if` `(y == 0) {``        ``cout << ``"Infinite"` `<< endl;``        ``return``;``    ``}``    ``if` `(x == 0) {``        ``cout << 0 << endl;``        ``return``;``    ``}``    ``if` `(n <= 0) {``        ``// Since n <= 0, don't compute after``        ``// the decimal``        ``cout << x / y << endl;``        ``return``;``    ``}` `    ``// Handling negative numbers``    ``if` `(((x > 0) && (y < 0)) || ((x < 0) && (y > 0))) {``        ``cout << ``"-"``;``        ``x = x > 0 ? x : -x;``        ``y = y > 0 ? y : -y;``    ``}` `    ``// Integral division``    ``int` `d = x / y;` `    ``// Now one by print digits after dot``    ``// using school division method.``    ``for` `(``int` `i = 0; i <= n; i++) {``        ``cout << d;``        ``x = x - (y * d);``        ``if` `(x == 0)``            ``break``;``        ``x = x * 10;``        ``d = x / y;``        ``if` `(i == 0)``            ``cout << ``"."``;``    ``}``}` `// Driver Program``int` `main()``{``    ``int` `x = 22, y = 7, n = 15;``    ``precisionCompute(x, y, n);``    ``return` `0;``}`

## Java

 `// Java program to compute division upto n``// decimal places.``import` `java.util.*;` `class` `Eulerian {``    ``public` `static` `void` `precisionCompute(``int` `x, ``int` `y, ``int` `n)``    ``{``        ``// Base cases``        ``if` `(y == ``0``) {``            ``System.out.print(``"Infinite"``);``            ``return``;``        ``}``        ``if` `(x == ``0``) {``            ``System.out.print(``"0"``);``            ``return``;``        ``}``        ``if` `(n <= ``0``) {``            ``// Since n <= 0, don't compute after``            ``// the decimal``            ``System.out.print(x / y);``            ``return``;``        ``}` `        ``// Handling negative numbers``        ``if` `(((x > ``0``) && (y < ``0``)) || ((x < ``0``) && (y > ``0``))) {``            ``System.out.print(``"-"``);``            ``x = x > ``0` `? x : -x;``            ``y = y > ``0` `? y : -y;``        ``}` `        ``// Integral division``        ``int` `d = x / y;` `        ``// Now one by print digits after dot``        ``// using school division method.``        ``for` `(``int` `i = ``0``; i <= n; i++) {``            ``System.out.print(d);``            ``x = x - (y * d);``            ``if` `(x == ``0``)``                ``break``;``            ``x = x * ``10``;``            ``d = x / y;``            ``if` `(i == ``0``)``                ``System.out.print(``"."``);``        ``}``    ``}` `    ``public` `static` `void` `main(String[] args)``    ``{``        ``int` `x = ``22``, y = ``7``, n = ``15``;``        ``precisionCompute(x, y, n);``    ``}``}` `// This code is contributed by rishabh_jain`

## C#

 `// C# program to compute division``// upto n decimal places.``using` `System;` `class` `Eulerian {` `    ``public` `static` `void` `precisionCompute(``int` `x, ``int` `y,``                                        ``int` `n)``    ``{``        ``// Base cases``        ``if` `(y == 0) {``            ``Console.WriteLine(``"Infinite"``);``            ``return``;``        ``}``        ``if` `(x == 0) {``            ``Console.WriteLine(``"0"``);``            ``return``;``        ``}``        ``if` `(n <= 0) {` `            ``// Since n <= 0, don't compute after``            ``// the decimal``            ``Console.WriteLine(x / y);``            ``return``;``        ``}` `        ``// Handling negative numbers``        ``if` `(((x > 0) && (y < 0)) || ((x < 0) && (y > 0))) {``            ``Console.WriteLine(``"-"``);``            ``x = x > 0 ? x : -x;``            ``y = y > 0 ? y : -y;``        ``}` `        ``// Integral division``        ``int` `d = x / y;` `        ``// Now one by print digits after dot``        ``// using school division method.``        ``for` `(``int` `i = 0; i <= n; i++) {``            ``Console.Write(d);``            ``x = x - (y * d);``            ``if` `(x == 0)``                ``break``;``            ``x = x * 10;``            ``d = x / y;``            ``if` `(i == 0)``                ``Console.Write(``"."``);``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `Main()``    ``{``        ``int` `x = 22, y = 7, n = 15;``        ``precisionCompute(x, y, n);``    ``}``}` `// This code is contributed by vt_m`

## PHP

 ` 0) && (``\$y` `< 0)) ||``        ``((``\$x` `< 0) && (``\$y` `> 0)))``    ``{``        ``echo` `"-"``;``        ``\$x` `= ``\$x` `> 0 ? ``\$x` `: -``\$x``;``        ``\$y` `= ``\$y` `> 0 ? ``\$y` `: -``\$y``;``    ``}` `    ``// Integral division``    ``\$d` `= ``\$x` `/ ``\$y``;` `    ``// Now one by print digits after dot``    ``// using school division method.``    ``for` `(``\$i` `= 0; ``\$i` `<= ``\$n``; ``\$i``++)``    ``{``        ``echo` `\$d``;``        ``\$x` `= ``\$x` `- (``\$y` `* ``\$d``);``        ``if` `(``\$x` `== 0)``            ``break``;``        ``\$x` `= ``\$x` `* 10;``        ``\$d` `= ``\$x` `/ ``\$y``;``        ``if` `(``\$i` `== 0)``            ``echo` `"."``;``    ``}``}` `// Driver Code``\$x` `= 22; ``\$y` `= 7; ``\$n` `= 15;` `precisionCompute(``\$x``, ``\$y``, ``\$n``);` `// This code is contributed by aj_36``?>`

## Python3

 `# Python3 program to compute``# division upto n decimal places.` `def` `precisionCompute(x, y, n):``    ` `    ``# Base cases``    ``if` `y ``=``=` `0``:``        ``print``(``"Infinite"``);``        ``return``;``    ``if` `x ``=``=` `0``:``        ``print``(``0``);``        ``return``;``    ``if` `n <``=` `0``:``        ` `        ``# Since n <= 0, don't``        ``# compute after the decimal``        ``print``(x ``/` `y);``        ``return``;``        ` `    ``# Handling negative numbers``    ``if` `(((x > ``0``) ``and` `(y < ``0``)) ``or``        ``((x < ``0``) ``and` `(y > ``0``))):``        ``print``(``"-"``, end ``=` `"");``        ``if` `x < ``0``:``            ``x ``=` `-``x;``        ``if` `y < ``0``:``            ``y ``=` `-``y;``            ` `    ``# Integral division``    ``d ``=` `x ``/` `y;``    ` `    ``# Now one by print digits``    ``# after dot using school``    ``# division method.``    ``for` `i ``in` `range``(``0``, n ``+` `1``):``        ``print``(d);``        ``x ``=` `x ``-` `(y ``*` `d);``        ``if` `x ``=``=` `0``:``            ``break``;``        ``x ``=` `x ``*` `10``;``        ``d ``=` `x ``/` `y;``        ``if` `(i ``=``=` `0``):``            ``print``(``"."``, end ``=` `"");` `# Driver Code``x ``=` `22``;``y ``=` `7``;``n ``=` `15``;``precisionCompute(x, y, n);` `# This code is contributed by mits`

## Javascript

 ``

Output :

`3.142857142857142`

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