. Generate Fibonacci series. ii. Test for prime numbers. iii. Test for vowels. iv. Use of foreach loop with arrays v. Reverse a number and find sum of digits of a number. vi. Finding factorial Value vii. Money Conversion viii. Quadratic Equation

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

namespace FIBO {

class Classi class

public void fibo() {

int I = 0 n * 2 = 1 ,n3,n,6 Console.Writenumber you want fibonacci series?"); nint.Parse(Console.ReadLine()); c = 3 Console.Write(ni+ "\t" + n2); while (c <= n) ( n 3=n1+n2; break; } Console.Write("\t" + n3); n * 1 = n2j n 2=p3;

C++

}

} public void testprime() {

int n = 0 Console.Write("Enter the no: ");

nint.Parse(Console.ReadLine()); bool flag false; for (int i = 2 i<=n/2; i++) { if (n %10) { flag = true; break;

}

} if (flag) Console.WriteLine("This is not prime number"); else Console.WriteLine("This is prime number"); Console.ReadKey();

} public void vowel()

{ char[] v = { 'a', 'e', '1', 'o', 'u', 'A', 'E', 'I', '0', 'U' }; Console.Write("Enter a character: "); char c char.Parse(Console.ReadLine()); switch (c)
{
case 'a':

case 'A':

case 'e':

case "E":

case '1': case 'I':

case 'o':

case '0': case 'u':

case 'U':

Console.WriteLine("This is a vowel....."); break;

default:

Console.WriteLine("This is not a vowel....."); break;

} } public void useforeach() {

int[] arr = \{4, 5, 6, 7, 8\} ; foreach () Console.WriteLine(ele + " "); // Console.WriteLine();

} public void reverseAndSum()

{

int sum = theta , n = 0 Console.WriteLineEnter the number: "); n = int.Parse(Console.ReadLine()); { int digit temp % 10;

int temp = n;

int rev = theta while (temp > 0)

sum = sum + digit; rev = rev * 10+ digit;

temp temp / 10;

} Console.WriteLine("reverse number is: "+rev); Console.WriteLine("sum of digit number is: "+sum);

}

public void fact()

{

Console.WriteLine("Enter the number: "); int n = int.Parse(Console.ReadLine());

int f = 1

for (int i = 1 i <= n i++)

{ f ^ * =i;

} Console.WriteLine(f);

} public void moneyconversion()

{

float euro = 90f pound 105, yen 0.57f, dollar = 83 ; Console.WriteLine("Enter the amount of money: ");

float rup = float.Parse(Console.ReadLine()); Console.WriteLine(rup + "Rupees = "+(rup/euro)+"Euro"); Console.WriteLine(rup + "Rupees Console.WriteLine(rup + "Rupees = Console.WriteLine(rup + "Rupees = "+ (rup / pound) + "Euro"); + (rup / yen) + "Euro"); + (rup / dollar) + "Euro");

} public void quad()

{

int a = 0 b = 0 c = 0;

double root1 = 0d , root2 0d;

Console.WriteLine("Enter the a,b,c values: ");

a = int.Parse(Console.ReadLine()); b = int.Parse(Console.ReadLine());
c = int.Parse(Console.ReadLine());

Console.WriteLine("Equation is: "+ a +"x^2+ "+b+"x + "+c);

double v Math.Sqrt((b * b) (4 * a * c));

Console.WriteLine(v);

root1=(-b+v)/(2*a);

root2=(-b - v) /(2*a);

if (root1 == root2)

{ Console.WriteLine("roots are equal:");

}

Console.WriteLine("roots are: "+root1+" and "+root2);

} public static void Main()

{

Class1 ob new Class1();

Console.WriteLine("fibonacci series: ");

ob.fibo();

Console.WriteLine("\n\nCheck for prime numbers: ");

ob.testprime();

Console.WriteLine("\n\nCheck for vowels: ");

ob.vowel();

Console.WriteLine("\n\nforeach loop: ");

ob.useforeach();

Console.WriteLine("\n\nreverse and sum: ");

ob.reverseAndSum();

Console.WriteLine("\n\nfactorial: ");

ob.fact();

Console.WriteLine("\n\nmoney conversion: ");

ob.moneyconversion();

Console.WriteLine("\n\nquadratic equation: ");ob.quad();

Console.ReadKey();

}

} }