Division without using '/' operator - GeeksforGeeks

27 Jul, 2021
Given two numbers, divide one from other without using ‘/’ operator. Examples :  
Input : num1 = 13, num2 = 2
Output : 6

Input : num1 = 14, num2 = -2
Output : -7

Input : num1 = -11, num2 = 3
Output : -3

Input : num1 = 10, num2 = 10
Output : 1

Input : num1 = -6, num2 = -2
Output : 3

Input : num1 = 0, num2 = 5
Output : 0
 
In order to perform division operation without using ‘/’ operator we followed the approach, in which we count the number of successful or complete number of subtraction of num2 from num1. Where num1 is the number to be divided and num2 is the number from which we have to divide num1. 
C++
Java
Python3
C#
PHP
Javascript
// CPP program to divide a number by other// without using / operator#include <bits/stdc++.h>using namespace std; // Function to find division without using// '/' operatorint division(int num1, int num2){   if (num1 == 0)       return 0;   if (num2 == 0)     return INT_MAX;    bool negResult = false;    // Handling negative numbers   if (num1 < 0)   {       num1 = -num1 ;       if (num2 < 0)           num2 = - num2 ;       else           negResult = true;   }   else if (num2 < 0)   {       num2 = - num2 ;       negResult = true;   }    // if num1 is greater than equal to num2   // subtract num2 from num1 and increase   // quotient by one.   int quotient = 0;   while (num1 >= num2)   {       num1 = num1 - num2 ;       quotient++ ;   }    // checking if neg equals to 1 then making   // quotient negative   if (negResult)        quotient = - quotient ;   return quotient ;} // Driver programint main(){    int num1 = 13, num2 = 2 ;    cout << division(num1, num2); ;    return 0;}
// Java program to divide a number by other// without using / operatorimport java.io.*; class GFG{    // Function to find division without using    // '/' operator    static int division(int num1, int num2)    {        if (num1 == 0)            return 0;        if (num2 == 0)            return Integer.MAX_VALUE;                 boolean negResult = false;                 // Handling negative numbers        if (num1 < 0)        {            num1 = -num1 ;            if (num2 < 0)                num2 = - num2 ;            else                negResult = true;        }        else if (num2 < 0)        {            num2 = - num2 ;            negResult = true;        }                 // if num1 is greater than equal to num2        // subtract num2 from num1 and increase        // quotient by one.        int quotient = 0;        while (num1 >= num2)        {            num1 = num1 - num2 ;            quotient++ ;        }                 // checking if neg equals to 1 then making        // quotient negative        if (negResult)                quotient = - quotient ;        return quotient ;    }         // Driver program    public static void main (String[] args)    {        int num1 = 13, num2 = 2 ;        System.out.println( division(num1, num2));                 }} // This code is contributed by vt_m.
# Python3 program to divide a number# by other without using / operator # Function to find division without # using '/' operatordef division(num1, num2):         if (num1 == 0): return 0    if (num2 == 0): return INT_MAX         negResult = 0         # Handling negative numbers    if (num1 < 0):        num1 = - num1                 if (num2 < 0):            num2 = - num2        else:            negResult = true                     elif (num2 < 0):        num2 = - num2        negResult = true         # if num1 is greater than equal to num2    # subtract num2 from num1 and increase    # quotient by one.    quotient = 0     while (num1 >= num2):        num1 = num1 - num2        quotient += 1         # checking if neg equals to 1 then    # making quotient negative    if (negResult):            quotient = - quotient    return quotient # Driver programnum1 = 13; num2 = 2print(division(num1, num2)) # This code is contributed by Ajit.
// C# program to divide a number by other// without using / operatorusing System; class GFG{    // Function to find division without    // using '/' operator    static int division(int num1, int num2)    {        if (num1 == 0)            return 0;        if (num2 == 0)            return int.MaxValue;                 bool negResult = false;                 // Handling negative numbers        if (num1 < 0)        {            num1 = -num1 ;            if (num2 < 0)                num2 = - num2 ;            else                negResult = true;        }        else if (num2 < 0)        {            num2 = - num2 ;            negResult = true;        }                 // if num1 is greater than equal to num2        // subtract num2 from num1 and increase        // quotient by one.        int quotient = 0;        while (num1 >= num2)        {            num1 = num1 - num2 ;            quotient++ ;        }                 // checking if neg equals to 1 then making        // quotient negative        if (negResult)                quotient = - quotient ;        return quotient ;    }         // Driver Code    public static void Main ()    {        int num1 = 13, num2 = 2 ;        Console.Write( division(num1, num2));                 }} // This code is contributed by nitin mittal.
<?php// CPP program to divide a number by other// without using / operator // Function to find division without using// '/' operator function division($num1, $num2){    if ($num1 == 0)        return 0;             if ($num2 == 0)        return INT_MAX;         $negResult = false;         // Handling negative numbers    if ($num1 < 0)    {        $num1 = -$num1 ;                 if ($num2 < 0)            $num2 = - $num2 ;        else            $negResult = true;    }    else if ($num2 < 0)    {        $num2 = - $num2 ;        $negResult = true;    }         // if num1 is greater than equal to num2    // subtract num2 from num1 and increase    // quotient by one.    $quotient = 0;    while ($num1 >= $num2)    {        $num1 = $num1 - $num2 ;        $quotient++ ;    }         // checking if neg equals to 1 then making    // quotient negative    if ($negResult)            $quotient = - $quotient ;    return $quotient ;} // Driver program$num1 = 13; $num2 = 2 ;echo division($num1, $num2) ;     // This code is contributed by ajit?>
<script>// Javascript program to divide a number by other// without using / operator     // Function to find division without using    // '/' operator    function division( num1, num2)    {        if (num1 == 0)            return 0;        if (num2 == 0)            return Number.MAX_VALUE;;        let negResult = false;         // Handling negative numbers        if (num1 < 0)        {            num1 = -num1;            if (num2 < 0)                num2 = -num2;            else                negResult = true;        }        else if (num2 < 0)        {            num2 = -num2;            negResult = true;        }         // if num1 is greater than equal to num2        // subtract num2 from num1 and increase        // quotient by one.        let quotient = 0;        while (num1 >= num2)        {            num1 = num1 - num2;            quotient++;        }         // checking if neg equals to 1 then making        // quotient negative        if (negResult)            quotient = -quotient;        return quotient;    }     // Driver program        let num1 = 13, num2 = 2;    document.write(division(num1, num2)); // This code is contributed by gauravrajput1</script>
Output :  
6
 
nitin mittal
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