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Loop Statement in C#:-


Loop is used to print large statements of data using a single repeatable block, Loop is also called an iterative statement because it will repeat the data according to condition.


Type of Loop:-

1)Entry Control Loop

      1.1)  While Loop:-
               init;
               while(condition)
               {
                          Statement;
                          Increment;

               }

When we want to create infinite Loop in C# then we prefer While Loop Otherwise we will use For Loop

class WhileExample
    {
        public static void Main()
        {
            int i = 1;
            while (true)
            {
                Console.WriteLine(i);
                i++;
                if (i == 10)
                    break;
            }
            Console.ReadKey();
        }
    }

      1.2)   For Loop:- 
This Loop will work using a single Line Statement

     for(init;condition;iteration)
    {
          Statement;
    }
WAP to check prime number?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class CheckPrime
    {
        static void Main()
        {
            int num;
            Console.WriteLine("Enter number");
            num = int.Parse(Console.ReadLine());
            int c = 0;
            for (int i = 1; i <= num; i++)
            {
                if (num % i == 0)
                    c++;
            }
            if (c == 2)
                Console.WriteLine("Prime");
            else
                Console.WriteLine("Not Prime");
            Console.ReadKey();
        }
    }
}



WAP to check prime number without using third variable?


class CheckPrime
    {
        static void Main()
        {
            int num,i;
            Console.WriteLine("Enter number");
            num = int.Parse(Console.ReadLine());
         
            for (i = 2; i < num; i++)
            {
                if (num % i == 0)
                {
                    Console.WriteLine("Not Prime");
                }
            }
            if (num==i)
                Console.WriteLine("Prime");
         
             
            Console.ReadKey();
        }
    }


WAP to check prime number with complete program optimization?

class CheckPrime
    {
        static void Main()
        {
            int num,i;
            Console.WriteLine("Enter number");
            num = int.Parse(Console.ReadLine());
         
            for (i = 2; i < num/2; i++)
            {
                if (num % i == 0)
                {
                    Console.WriteLine("Not Prime");
                }
            }
            if (num/2==i)
                Console.WriteLine("Prime");
         
             
            Console.ReadKey();
        }
    }


2) Exit Control Loop

    2.1) do--while:-   First Execute Statement then check condition.

init;
do
{
      Statement;
      Increment;

}while(condition);


WAP to print 1 to 10 and 10 to 1 using do-while Loop?


class DoWhileExample
    {
        public static void Main()
        {
            int i = 1;
            do
            {
                if (i <= 10)
                    Console.WriteLine(i);
                else
                    Console.WriteLine(21-i);
                i++;
            } while (i <= 20);
            Console.ReadKey();
        }
    }


ASSIGNMENT of LOOP:-


 1)  WAP to check prime number without using a third variable?

3)  WAP to find the first , second, and third max number in pin code?

2)  WAP to display the table of each Fibonacci series digit?



WAP to check prime number with complete expression

5    5%2,5%3,5%4


WAP to print factorial with expression

5*4*3*2*1=120

4) WAP  to check that a particular digit exists in a mobile number or not?




                          



2 Comments

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  1. WAP to print factorial with expression


    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    namespace factorial
    {
    class Program
    {
    static void Main(string[] args)
    {
    int fact=1, i,num;
    Console.WriteLine("Enter a number to find factorial ");
    num = int.Parse(Console.ReadLine());

    for(i=num;i>=1;i--)
    {
    fact = fact * i;
    Console.Write("*");
    Console.Write(i*1 );


    }

    Console.WriteLine(" = " + fact);

    Console.ReadKey();
    }
    }
    }

    ReplyDelete
  2. WAP to display table of each Fibonacci series digit?


    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    namespace fabonacci
    {
    class Program
    {
    static void Main(string[] args)
    {
    int a = -1 , b = 1 ,c;


    for (int i = 1; i <= 6; i++)
    {
    c = a + b;


    if (c > 0)
    {
    Console.WriteLine("Table of " + c);
    for (int j = 1; j <= 10; j++)
    {

    Console.WriteLine(c * j);
    }


    }
    a = b;
    b = c;


    }

    Console.ReadKey();
    }
    }
    }

    ReplyDelete

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