C#: Test whether a given non-negative number is a multiple of 13 or it is one more than a multiple of 13

Last update on June 25 2025 13:02:59 (UTC/GMT +8 hours)

Multiple of 13 or 1 More

Write a C# Sharp program to test if a given non-negative number is a multiple of 13 or one more than a multiple of 13.

Sample Solution:-

C# Sharp Code:

using System;
using System.Linq;

namespace exercises
{
    // Class declaration
    class Program
    {
        // Main method - entry point of the program
        static void Main(string[] args)
        {
            // Calling the 'test' method with different integers and printing the results
            Console.WriteLine(test(13));  // Output: True
            Console.WriteLine(test(14));  // Output: True
            Console.WriteLine(test(27));  // Output: False
            Console.WriteLine(test(41));  // Output: True
            Console.ReadLine(); // Keeping the console window open
        }

        // Method to check if a number is either a multiple of 13 or has a remainder of 1 when divided by 13
        public static bool test(int n)
        {
            // Check if the remainder when 'n' is divided by 13 is either 0 or 1
            return n % 13 == 0 || n % 13 == 1;
        }
    }
}

Sample Output:

True
True
True
False

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program to check if a number is one less than a multiple of 13 or exactly divisible by 13.
Write a C# program to return true if a number is either a multiple of 13 or a multiple of 7 plus 6.
Write a C# program to determine whether a number is within 1 of a multiple of 13 or 26.
Write a C# program to test if a number is divisible by 13 or contains the digit '3'.

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