By 22/07/2015 10 Comments

C# Nested Do-While Loops

  • Declaration of one or more do-while loops inside other do-while loop’s body is called nested do-while loops.
  • The do-while loop which is declared inside other do-while loop is called inner do-while loop.
  • C# Nested Do-While Loops are very useful for creating programs which has more than one dimensions such as rows and columns, a basic calculator layout, different shapes etc.
  • Using nested do-while loops we can access multidimensional array’s elements easily.
  • Nested loops are used for complex programs.


using System;
namespace csharpBasic
    // Start class definition / declaration.
    class Program
        // Static main method void type declaration.
        static void Main(string[] args)
            // Initialize an int type outerLoopNumber with 1.
            int outerLoopNumber = 1;

            // Initialize an int type sum with 1.
            int sum = 1;

            /* Following is do while loop declaration, this loop called an outer loop, 
               execute this loop 3 times according to its condition part.
            { // Outer do-while scope is started.
                int innerLoopNumber = 1;

                { // Inner do-while scope is started.

                    // Print sum variable
                    Console.Write(" {0}", sum);
                    sum += 1;

                } while (innerLoopNumber <= 3);  // End of inner do-while loop.

            } while (outerLoopNumber <= 3);  // End of outer do-while loop.


        } // End of main method definition. 
    } // End of class. 

   The Output will be:
   1 2 3
   4 5 6
   7 8 9

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Posted in: C# Basics, C#.NET

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