using System;
class Program
{
static void Main()
{
// Prompt the user for input and read three numbers
Console.Write("Enter the first number: ");
int num1 = int.Parse(Console.ReadLine());
Console.Write("Enter the second number: ");
int num2 = int.Parse(Console.ReadLine());
Console.Write("Enter the third number: ");
int num3 = int.Parse(Console.ReadLine());
// Find the largest number using the ternary operator
int largest = (num1 > num2)
? ((num1 > num3) ? num1 : num3)
: ((num2 > num3) ? num2 : num3);
// Output the largest number
Console.WriteLine("The largest number is: " + largest);
}
}
using System;
class Program
{
static void Main()
{
// Prompt the user for input
Console.Write("Enter a number: ");
int number = int.Parse(Console.ReadLine());
// Calculate the number of digits
int originalNumber = number;
int numberOfDigits = number.ToString().Length;
int sum = 0;
// Calculate the sum of each digit raised to the power of the number of digits
while (number > 0)
{
int digit = number % 10;
sum += (int)Math.Pow(digit, numberOfDigits);
number /= 10;
}
// Check if the number is an Armstrong number
if (sum == originalNumber)
{
Console.WriteLine(originalNumber + " is an Armstrong number.");
}
else
{
Console.WriteLine(originalNumber + " is not an Armstrong number.");
}
}
}
using System;
class Program
{
static void Main()
{
// Prompt the user for input
Console.Write("Enter a number: ");
int number = int.Parse(Console.ReadLine());
// Variable to store the reversed number
int reversedNumber = 0;
// Reverse the number
while (number > 0)
{
int digit = number % 10; // Get the last digit
reversedNumber = (reversedNumber * 10) + digit; // Append digit to reversed number
number /= 10; // Remove the last digit from the original number
}
// Output the reversed number
Console.WriteLine("The reversed number is: " + reversedNumber);
}
}
using System;
class Program
{
static void Main()
{
// Prompt the user for input
Console.Write("Enter a number to print its table: ");
int number = int.Parse(Console.ReadLine());
// Print the multiplication table
Console.WriteLine("Multiplication table for " + number + ":");
for (int i = 1; i <= 10; i++)
{
Console.WriteLine(number + " x " + i + " = " + (number * i));
}
}
}
using System;
class Program
{
static void Main()
{
// Prompt the user for input
Console.Write("Enter a number to find its factorial: ");
int number = int.Parse(Console.ReadLine());
// Call the Factorial function and store the result
long result = Factorial(number);
// Output the result
Console.WriteLine("The factorial of " + number + " is: " + result);
}
// Function to calculate factorial
static long Factorial(int n)
{
long factorial = 1;
for (int i = 1; i <= n; i++)
{
factorial *= i; // Multiply factorial by current number
}
return factorial;
}
}
using System;
class Program
{
static void Main()
{
// Prompt the user for input
Console.Write("Enter a number to check if it is prime: ");
int number = int.Parse(Console.ReadLine());
// Call the IsPrime function and store the result
bool isPrime = IsPrime(number);
// Output the result
if (isPrime)
{
Console.WriteLine(number + " is a prime number.");
}
else
{
Console.WriteLine(number + " is not a prime number.");
}
}
// Function to check if a number is prime
static bool IsPrime(int n)
{
// Check for numbers less than 2
if (n < 2)
return false;
// Check from 2 to the square root of n
for (int i = 2; i * i <= n; i++)
{
if (n % i == 0)
return false; // n is divisible by i, hence not prime
}
return true; // n is prime
}
}
using System;
class Program
{
static void Main()
{
// Input array size
Console.Write("Enter the number of elements in the array: ");
int size = int.Parse(Console.ReadLine());
// Initialize the array
int[] array = new int[size];
// Input array elements
Console.WriteLine("Enter the elements of the array:");
for (int i = 0; i < size; i++)
{
Console.Write($"Element {i + 1}: ");
array[i] = int.Parse(Console.ReadLine());
}
// Find max and min elements
(int max, int min) = FindMaxAndMin(array);
// Display results
Console.WriteLine($"Maximum element: {max}");
Console.WriteLine($"Minimum element: {min}");
}
static (int, int) FindMaxAndMin(int[] array)
{
if (array.Length == 0)
{
throw new ArgumentException("Array cannot be empty.");
}
int max = array[0];
int min = array[0];
foreach (int element in array)
{
if (element > max)
{
max = element;
}
if (element < min)
{
min = element;
}
}
return (max, min);
}
}
using System;
class Program
{
static void Main()
{
// Example sorted array
int[] sortedArray = { 1, 3, 5, 7, 9, 11, 13, 15, 17, 19 };
Console.Write("Enter the number to search: ");
int target = int.Parse(Console.ReadLine());
int index = BinarySearch(sortedArray, target);
if (index != -1)
{
Console.WriteLine($"Number {target} found at index {index}.");
}
else
{
Console.WriteLine($"Number {target} not found in the array.");
}
}
static int BinarySearch(int[] array, int target)
{
int left = 0;
int right = array.Length - 1;
while (left <= right)
{
int mid = left + (right - left) / 2;
// Check if the target is at the mid index
if (array[mid] == target)
{
return mid; // Target found
}
// If the target is greater, ignore the left half
if (array[mid] < target)
{
left = mid + 1;
}
// If the target is smaller, ignore the right half
else
{
right = mid - 1;
}
}
// Target is not present in the array
return -1;
}
}
using System;
class Program
{
static void Main()
{
// Input array size
Console.Write("Enter the number of elements in the array: ");
int size = int.Parse(Console.ReadLine());
// Initialize the array
int[] array = new int[size];
// Input array elements
Console.WriteLine("Enter the elements of the array:");
for (int i = 0; i < size; i++)
{
Console.Write($"Element {i + 1}: ");
array[i] = int.Parse(Console.ReadLine());
}
// Reverse the array
ReverseArray(array);
// Display the reversed array
Console.WriteLine("Reversed array:");
foreach (int element in array)
{
Console.Write(element + " ");
}
Console.WriteLine();
}
static void ReverseArray(int[] array)
{
int left = 0;
int right = array.Length - 1;
while (left < right)
{
// Swap elements at left and right indices
int temp = array[left];
array[left] = array[right];
array[right] = temp;
// Move indices towards the center
left++;
right--;
}
}
}
using System;
public class Person
{
private string name;
private int age;
public string Name
{
set {name = value;}
get {return name;}
}
public int Age
{
set {age = value;}
get {return age;}
}
public void displayInfo()
{
Console.WriteLine("Name = " + Name + ", Age = " + Age);
}
}
public class Program
{
public static void Main()
{
Person personObj = new Person()
{
Name = "Harry",
Age = 22
};
personObj.displayInfo();
}
}
using System;
public class User
{
public string name;
public void DisplayInfo()
{
Console.WriteLine($"Name = {name}");
}
}
public class Teacher : User
{
public int teacherId;
public string subject;
public void DisplayTeacherInfo()
{
Console.WriteLine($"Role = Teacher");
Console.WriteLine($"Name = {name}");
Console.WriteLine($"Teacher ID = {teacherId}");
Console.WriteLine($"Subject = {subject}");
}
}
public class Student : User
{
public int studentId;
public int classId;
public void DisplayStudentInfo()
{
Console.WriteLine($"Role = Student");
Console.WriteLine($"Name = {name}");
Console.WriteLine($"Student ID = {studentId}");
Console.WriteLine($"Class = {classId}");
}
}
public class Program
{
public static void Main()
{
Teacher teacher1 = new Teacher
{
name = "Harish",
teacherId = 55677,
subject = "English"
};
teacher1.DisplayTeacherInfo();
Console.WriteLine();
Student student1 = new Student
{
name = "Rajesh",
studentId = 454543,
classId = 6
};
student1.DisplayStudentInfo();
}
}
using System;
// Base class Vehicle
public class Vehicle
{
// Virtual method to drive, can be overridden by derived classes
public virtual void Drive()
{
Console.WriteLine("The vehicle is driving.");
}
}
// Derived class Car
public class Car : Vehicle
{
// Overriding the Drive method in the derived class
public override void Drive()
{
Console.WriteLine("The car is driving on the road.");
}
}
// Derived class Bike
public class Bike : Vehicle
{
// Overriding the Drive method in the derived class
public override void Drive()
{
Console.WriteLine("The bike is riding on the road.");
}
}
public class Calculator
{
// Method overloading - same method name, different number of parameters
public int Add(int a, int b)
{
return a + b;
}
// Overloaded method with different number of parameters
public int Add(int a, int b, int c)
{
return a + b + c;
}
}
public class Program
{
public static void Main()
{
// Demonstrating Method Overriding
// Creating objects of Vehicle, Car, and Bike
Vehicle myVehicle = new Vehicle();
myVehicle.Drive(); // Calls the base class version
Car myCar = new Car();
myCar.Drive(); // Calls the overridden version in Car
Bike myBike = new Bike();
myBike.Drive(); // Calls the overridden version in Bike
// Demonstrating Method Overloading
Calculator calculator = new Calculator();
Console.WriteLine("Sum of 2 and 3: " + calculator.Add(2, 3)); // Calls the first Add method
Console.WriteLine("Sum of 2, 3, and 4: " + calculator.Add(2, 3, 4)); // Calls the second Add method
}
}
using System;
public class Program
{
public static void Main()
{
try
{
Console.WriteLine("Enter the numerator:");
int numerator = int.Parse(Console.ReadLine()); // Convert input to integer
Console.WriteLine("Enter the denominator:");
int denominator = int.Parse(Console.ReadLine()); // Convert input to integer
// Division operation
int result = numerator / denominator;
Console.WriteLine($"Result: {numerator} / {denominator} = {result}");
}
catch (DivideByZeroException)
{
// Handles division by zero
Console.WriteLine("Error: Cannot divide by zero.");
}
catch (FormatException)
{
// Handles invalid input (non-numeric input)
Console.WriteLine("Error: Please enter valid numeric values.");
}
catch (Exception ex)
{
// Handles any other unexpected exceptions
Console.WriteLine($"An unexpected error occurred: {ex.Message}");
}
finally
{
// This block always executes
Console.WriteLine("Thank you for using the calculator!");
}
}
}