Algorithm

Certainly! In C#, a for loop is a control flow statement that allows you to repeatedly execute a block of code a certain number of times. The basic syntax of a for loop is as follows:

csharp
for (initialization; condition; iteration)
{
    // Code to be repeated
}

 

  • initialization: This is where you initialize the loop variable. It is executed only once at the beginning of the loop.

  • condition: This is the loop continuation condition. As long as this condition is true, the loop will continue to execute. If the condition becomes false, the loop terminates.

  • iteration: This is the expression that is executed after each iteration of the loop. It is usually used to update the loop variable.

 

Code Examples

#1 C# Programming for Loop

Code - C# Programming

using System;

namespace Loop
{
	class ForLoop
	{
		public static void Main(string[] args)
		{
			for (int i=1; i < =5; i++)
			{
				Console.WriteLine("C# For Loop: Iteration {0}", i);
			}
		}
	}	
}
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Output

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–
+
cmd
C# For Loop: Iteration 1
C# For Loop: Iteration 2
C# For Loop: Iteration 3
C# For Loop: Iteration 4
C# For Loop: Iteration 5

#2 for loop to compute sum of first n natural numbers in C# programming

Code - C# Programming

using System;

namespace Loop
{
	class ForLoop
	{
		public static void Main(string[] args)
		{
			int n = 5,sum = 0;

			for (int i=1; i < =n; i++)
			{
				// sum = sum + i;
				sum += i;
			}

			Console.WriteLine("Sum of first {0} natural numbers = {1}", n, sum);
		}
	}
}
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Output

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cmd
Sum of first 5 natural numbers = 15

#3 multiple initialization and iterator expressions in C# programming

Code - C# Programming

using System;

namespace Loop
{
	class ForLoop
	{
		public static void Main(string[] args)
		{
			for (int i=0, j=0; i+j < =5; i++, j++)
			{
				Console.WriteLine("i = {0} and j = {1}", i,j);
			}         
		}
	}
}
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Output

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cmd
i = 0 and j = 0
i = 1 and j = 1
i = 2 and j = 2

#4 for loop without initialization and iterator statement in C # programming

Code - C# Programming

using System;

namespace Loop
{
	class ForLoop
	{
		public static void Main(string[] args)
		{
			int i = 1;
			for ( ; i < =5; )
			{
				Console.WriteLine("C# For Loop: Iteration {0}", i);
				i++;
			}
		}
	}
}
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Output

x
–
+
cmd
C# For Loop: Iteration 1
C# For Loop: Iteration 2
C# For Loop: Iteration 3
C# For Loop: Iteration 4
C# For Loop: Iteration 5

#5 Infinite for loop in C# Programming

Code - C# Programming

using System;

namespace Loop
{
	class ForLoop
	{
		public static void Main(string[] args)
		{
			for (int i=1 ; i>0; i++)
			{
				Console.WriteLine("C# For Loop: Iteration {0}", i);
			}
		}
	}
}
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Demonstration

C# programming for loop