Swap bits

PROBLEM :

Given a number x and two positions (from right side) in binary representation of x, write a program that swaps n bits at given two positions and returns the result.

Input:
The first line of input contains an integer T denoting the number of test cases.
The first line of each test case is X, P1, P2 and N. X is a number, P1 and P2 is two given position and swaps N number of bits at given two position.

Output:
Print the result.

Constraints:
1 = T = 15
1 = X = 200
0 = P1 < P2 = 8
1 = N = 5

Example:
Input:
2
47 1 5 3
28 0 3 2

Output:
227
7

--------------------------------------------------------------------------------
SIMPLE c++ IMPLEMENTATION :
--------------------------------------------------------------------------------

#include<iostream>
using namespace std;
int SwapBits(int ,int ,int ,int ) ;
int main()
{
int t ;
cin>>t ;
while(t--){
   int no,p1,p2,k ;
 
   cin>>no>>p1>>p2>>k ;
   cout<<SwapBits(no,p1,p2,k) ;
   cout<<endl ;
}
return 0;
}

int SwapBits(int no,int p1,int p2,int k){
    int set1,set2 ;
   
    set1=(no>>p1)&((1U<<k)-1) ;
    set2=(no>>p2)&((1U<<k)-1) ;
   
    int Xor=set1^set2 ;
    Xor=(Xor<<p1)|(Xor<<p2) ;
   
    return Xor^no ;
}

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