Write a program in C++ to find absolute difference between the original number and it's reversed number

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Write a program in c++ to find absolute difference between the original number and it's reversed number

What I have tried:

Yes I have tried it but I am very confused about how to solve this,and what would be the solution for it

Posted 26-Aug-22 1:05am

Vedaanti Badwaik

Updated 26-Aug-22 1:51am

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3 solutions

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CPallini · Answer 1 · 2022-08-26T01:41:00

Solution 3

What's wrong with:

C++

#include <iostream>
using namespace std;

unsigned rev(unsigned u)
{
  unsigned ru = 0;
  while (u)
  {
    ru = ru * 10 + u % 10;
    u /= 10;
  }
  return ru;
}

unsigned uabs(unsigned u1, unsigned u2)
{
  if ( u2 < u1 )
  {
    return (u1-u2);
  }
  return (u2-u1);
}

int main()
{

  unsigned u;
  cout << "please enter a not-negative number: ";
  cin >> u;

  cout << "the asolute difference between the original number and the reversed one is " << uabs(u, rev(u)) << "\n";
}

?

Posted 26-Aug-22 1:41am

CPallini

Comments

Patrice T 26-Aug-22 7:52am

+5

CPallini 26-Aug-22 8:02am

Thank you.

Patrice T 26-Aug-22 8:05am

By the way, you can simplify your code, see S4.

CPallini 26-Aug-22 8:44am

Well, you have to use abs((long long) u1 - u2), which is ugly.

Dave Kreskowiak 26-Aug-22 8:50am

You have a nasty habit of doing someone's homework for them. That takes them out of the process of learning through failure and thinking about the problem.

CPallini 26-Aug-22 9:18am

I know, it happens sometimes. However this is not the case. The OP posted his code (as solution). Now it has disappeared.

Dave Kreskowiak 26-Aug-22 9:19am

Ah, that explains it then.

OriginalGriff · Answer 2 · 2022-08-26T01:16:00

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.

So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.

If you are having problems getting started at all, then this may help: How to Write Code to Solve a Problem, A Beginner's Guide[^]

Patrice T · Answer 3 · 2022-08-26T01:51:00

Quote:

C++

/* Find Absolute Difference */
if (input < reverseInteger(input)) {
    input = reverseInteger(input); // If the result will be negative, reverse the number before finding the difference
    input -= reverseInteger(input);
}
else {
    input -= reverseInteger(input);
}

You can always make things as complicated as you want, but :

C++

AbsoluteDifference= abs( A - B );

is simpler

Write a program in C++ to find absolute difference between the original number and it's reversed number

3 solutions

Solution 3

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