C program to print nth iteration using loops

C# program to print 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 . . . nth iteration

Problem Statement:

Write a program using loop which prints the following output.

1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 . . . nth iteration

Solution:

static void Main(string[] args)
 {
 int i, j, num;
 Console.WriteLine("Enter value of num:");
 num = Convert.ToInt32(Console.ReadLine());
 for (i = 1; i <= num; i++)
 {
 for (j = 1; j <= i; j++)
 Console.Write(i + " ");
 }
 Console.ReadLine();
 }

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C Program using Functions and loops

C# Program using Functions

Program Statement:

Write a function which takes one value as parameter and display the sum of digits in the value. e.g. if user has passed 125 then function will print 1+2+5 = 7

Solution:

 class _sum
 {
 long n, i, sum = 0;
 public void add(long n)
 {
 for (i = n; i != 0; i = i / 10)
 {
 sum = sum + i % 10;

 }
 Console.WriteLine(" Sum of digits is : {0}", sum);
 }
 public void input()
 {
 Console.Write(" Enter desired digit : ");
 n = Convert.ToInt64(System.Console.ReadLine());
 add(n);
 }

 } 

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program to print sum of series in C using loops

C# program to print sum of series

Program Statement:

Write a program to display the sum of the following series using loop.

1*x + 2*x2 + 3*x3 + 4*x4 + 5*x5 + … + n*xn

Solution:

 static void Main(string[] args)
 {
 int j, n = 1, x, lastn, sum = 0, prod = 1;
 Console.WriteLine("Enter last digit:");
 lastn=Convert.ToInt32(Console.ReadLine());
 Console.WriteLine("Enter value of x:");
 x = Convert.ToInt32(Console.ReadLine());
 for (j = 1; j <= lastn; j++)
 {
 n = n * x;
 prod = n * j;
 sum = sum + prod;
 }
 Console.WriteLine("Sum of Series 1*x + 2*x2 + 3*x3 + 4*x4 + 5*x5 + … + n*xn when n=: " + n +" and x= "+ x+ "sum= "+ sum);
 Console.ReadLine();
 }
 

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