C#: Compute the sum of the two given integers

Last update on June 25 2025 13:03:00 (UTC/GMT +8 hours)

Sum is 18 if One Value in 10-20 Range

Write a C# Sharp program to compute the sum of the two given integers. Return 18 if one of the given integer values is in the range of 10..20 inclusive.

visual Presentation:

C# Sharp: Basic Algorithm Exercises - Compute the sum of the two given integers.

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(3, 7));     // Output: 18
            Console.WriteLine(test(10, 11));   // Output: 18
            Console.WriteLine(test(10, 20));   // Output: 18
            Console.WriteLine(test(21, 220));  // Output: 241
            Console.ReadLine(); // Keeping the console window open
        }

        // Method to determine the result based on the conditions
        public static int test(int x, int y)
        {
            // If x is between 10 and 20 OR y is between 10 and 20, return 18; otherwise, return the sum of x and y
            return (x >= 10 && x <= 20) || (y >= 10 && y <= 20) ? 18 : x + y;
        }
    }
}

Sample Output:

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program that returns 25 if either of the two integers is in the 30–40 range.
Write a C# program to return 0 if both integers are in the 10–20 range; otherwise return their sum.
Write a C# program to return a constant value if any of the two integers fall in overlapping forbidden ranges.
Write a C# program to return 18 if the absolute difference of two numbers falls in the 10–20 range.

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