# Check if two numbers are equal without using comparison operators

Following are not allowed to use
1) Comparison Operators
2) String functions

Examples:

```Input : num1 = 1233, num2 - 1233
Output : Same

Input : num1 = 223, num2 = 233
Output : Not Same
```

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Method 1: The idea is to use XOR operator. XOR of two numbers is 0 if the numbers are same, otherwise non-zero.

## C++

 `#include ` `using` `namespace` `std; ` `  `  `// Finds if a and b are same. ` `void` `areSame(``int` `a, ``int` `b) ` `{ ` `   ``if` `(a^b)  ` `       ``cout << ``"Not Same"``;  ` `   ``else`  `       ``cout << ``"Same"``; ` `} ` `  `  `int` `main() ` `{   ` `   ``areSame(10, 20); ` `}  `

## Java

 `class` `GFG ` `{ ` `    ``// Finds if a and b are same ` `    ``static` `void` `areSame(``int` `a,``int` `b) ` `    ``{ ` `        ``if``( (a ^ b) != ``0` `) ` `            ``System.out.println(``"Not Same"``); ` `        ``else` `            ``System.out.println(``"Same"``); ` `    ``} ` ` `  `    ``public` `static` `void` `main(String args[]) ` `    ``{ ` `        ``areSame(``10``,``20``); ` `    ``} ` `     `  `} ` `// This code is contributed by Sumit Ghosh `

## Python

 `# Finds if a and b are same. ` `def` `areSame(a, b): ` `   ``if` `(a ^ b):  ` `       ``print` `"Not Same"` `   ``else``: ` `       ``print` `"Same"` `   `  `# Driver code ` `areSame(``10``, ``20``) ` ` `  `# This code is submitted by Sachin Bisht `

## C#

 `// C# program to check if 2  ` `// numbers are same ` `using` `System; ` ` `  `class` `GFG ` `{ ` `    ``// Finds if a and b are same ` `    ``static` `void` `areSame(``int` `a, ``int` `b) ` `    ``{ ` `        ``if``( (a ^ b) != 0 ) ` `          ``Console.Write(``"Not Same"``); ` `        ``else` `          ``Console.Write(``"Same"``); ` `    ``} ` `    `  `    ``// Driver code ` `    ``public` `static` `void` `Main() ` `    ``{ ` `                `  `        ``// Calling Function ` `        ``areSame(10, 20); ` `    ``} ` `     `  `} ` ` `  `// This code is contributed by Nitin Mittal. `

## PHP

 ` `

Output:

`Not Same`

Method 2: We can subtract the numbers. Same numbers yield 0. If answer is not 0, numbers are not same.

## C++

 `// CPP code to check if 2 numbers are same ` `#include ` `using` `namespace` `std; ` ` `  `// Finds if a and b are same ` `void` `areSame(``int` `a, ``int` `b) ` `{ ` `    ``if` `(!(a - b)) ` `        ``cout << ``"Same"``; ` `    ``else` `        ``cout << ``"Not Same"``; ` `} ` ` `  `// Driver code ` `int` `main()  ` `{     ` `     ``areSame(10, 20);     ` `    ``return` `0; ` `} `

## Java

 `// Java code to check if 2 numbers are same ` `class` `GFG{  ` ` `  `    ``// Finds if a and b are same ` `    ``static` `void` `areSame(``int` `a, ``int` `b) ` `    ``{ ` `        ``if` `((a - b) == ``0``) ` `            ``System.out.println(``"Same"``); ` `        ``else` `            ``System.out.println(``"Not Same"``); ` `    ``} ` `  `  `    ``// Driver code ` `    ``public` `static` `void` `main(String args[])  ` `    ``{     ` `        ``areSame(``10``, ``20``);     ` `     `  `    ``} ` `} ` `//This code is contributed by Sumit Ghosh `

## Python

 `# Python code to check if 2 numbers are same ` ` `  `# Finds if a and b are same ` `def` `areSame(a, b): ` `    ``if` `(``not``(a ``-` `b)): ` `        ``print` `"Same"` `    ``else``: ` `        ``print` `"Not Same"` `# Driver code ` `areSame(``10``, ``20``) ` ` `  `# This code is submitted by Sachin Bisht `

## C#

 `// C# code to check if 2  ` `// numbers are same ` `using` `System; ` ` `  `class` `GFG ` `{  ` ` `  `    ``// Finds if a and b are same ` `    ``static` `void` `areSame(``int` `a, ``int` `b) ` `    ``{ ` `        ``if` `((a - b) == 0) ` `            ``Console.Write(``"Same"``); ` `        ``else` `            ``Console.Write(``"Not Same"``); ` `    ``} ` ` `  `    ``// Driver code ` `    ``public` `static` `void` `Main()  ` `    ``{  ` `         `  `        ``// Calling Function ` `        ``areSame(10, 20);  ` `    ``} ` `} ` ` `  `// This code is contributed by Nitin Mittal. `

## PHP

 ` `

Output:

```Not Same
```

This article is contributed by Rohit Thapliyal. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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Improved By : nitin mittal

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