﻿ C# - Reverse an integer and add with the original number

# C#: Reverse an integer and add with the original number

## C# Sharp String: Exercise-59 with Solution

Write a C# Sharp program to reverse a positive integer and add the reversed number to the original number.

Sample Data:
(456) - > 456654
(-123) -> "Input a positive number."
(10000) -> 1000000001

Sample Solution-1:

C# Sharp Code:

``````using System;
using System.Linq;

namespace exercises
{
class Program
{
static void Main(string[] args)
{
// Declare and initialize an integer variable
int n = 567;

// Display the original number
Console.WriteLine("Original number: " + n);

// Display the action about to be performed
Console.WriteLine("Reverse the said integer and add with the original number-");

// Invoke the 'test' method and display the result
Console.WriteLine(test(n));

// Change the value of n to a negative number
n = -123;

// Display the new original number
Console.WriteLine("\nOriginal number: " + n);

// Display the action about to be performed
Console.WriteLine("Reverse the said integer and add with the original number-");

// Invoke the 'test' method and display the result
Console.WriteLine(test(n));

// Change the value of n to a large number
n = 10000;

// Display the new original number
Console.WriteLine("\nOriginal number: " + n);

// Display the action about to be performed
Console.WriteLine("Reverse the said integer and add with the original number-");

// Invoke the 'test' method and display the result
Console.WriteLine(test(n));
}

// Define a method 'test' that takes an integer argument 'n' and returns a string
public static string test(int n)
{
// Check if the number is greater than zero
if (n > 0)
{
// Convert the integer to a string, reverse it, convert back to string, and concatenate with the original number
return n + new string(n.ToString().Reverse().ToArray());
}
// Return a message if the input is not a positive number
return "Input a positive number.";
}
}
}
```
```

Sample Output:

```Original number: 567
Reverse the said integer and add with the original number-
567765

Original number: -123
Reverse the said integer and add with the original number-
Input a positive number.

Original number: 10000
Reverse the said integer and add with the original number-
1000000001

```

Flowchart :

Sample Solution-2:

C# Sharp Code:

``````using System;
using System.Linq;

namespace exercises
{
class Program
{
static void Main(string[] args)
{
// Declare and initialize an integer variable
int n = 567;

// Display the original number
Console.WriteLine("Original number: " + n);

// Display the action about to be performed
Console.WriteLine("Reverse the said integer and add with the original number-");

// Invoke the 'test' method and display the result
Console.WriteLine(test(n));

// Change the value of n to a negative number
n = -123;

// Display the new original number
Console.WriteLine("\nOriginal number: " + n);

// Display the action about to be performed
Console.WriteLine("Reverse the said integer and add with the original number-");

// Invoke the 'test' method and display the result
Console.WriteLine(test(n));

// Change the value of n to a large number
n = 10000;

// Display the new original number
Console.WriteLine("\nOriginal number: " + n);

// Display the action about to be performed
Console.WriteLine("Reverse the said integer and add with the original number-");

// Invoke the 'test' method and display the result
Console.WriteLine(test(n));
}

// Define a method 'test' that takes an integer argument 'n' and returns a string
public static string test(int n)
{
// Check if the number is greater than zero
if (n > 0)
{
// Convert the integer to a string and concatenate it with its reverse
return n.ToString() + string.Concat(n.ToString().Reverse());
}
// Return a message if the input is not a positive number
return "Input a positive number.";
}
}
}
```
```

Sample Output:

```Original number: 567
Reverse the said integer and add with the original number-
567765

Original number: -123
Reverse the said integer and add with the original number-
Input a positive number.

Original number: 10000
Reverse the said integer and add with the original number-
1000000001
```

Flowchart :

C# Sharp Code Editor:

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