• This program prompts the user to enter a double (floating-point nymber) .
• It uses ' Console.ReadLine() ' to read the user input as a string .
• ' Convert.ToDouble ' is used to convert the string input to a double .
• The entered double is then displayed using ' Console.WriteLine ' .
Sum of Two Integers:
using System;
class Program {
static void Main() {
Console.Write("Enter the first integer : ");
int num1 = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the second integer : ");
int num2 = Convert.ToInt32(Console.ReadLine());
int sum = num1 + num2;
Console.WriteLine("The sum of " + num1 + " and " + num2 + " is : " + sum);
} }
• Prompts the user to enter the first integer using ' Console.Write ' and reads the input using ' Console.ReadLine ' . Converts the input to an integer using ' Convert.ToInt32 ' .
• Prompts the user to enter the second integer in a similar manner .
• Calculates the sum of the two integers using the ' + ' operator .
• Displays the result using ' Console.WriteLine ' .
String Input:
using System;
class Program {
static void Main() {
Console.Write("Enter a string : ");
string userInput = Console.ReadLine();
Console.WriteLine("You entered : " + userInput);
} }
• This Program prompts the user to enter a string of characters.
• It uses ' Console.ReadLine() ' to directly read the user input as a string.
• The entered string is then displayed using ' Console.WriteLine ' .
Average of Three Integers:
using System;
class Program {
static void Main() {
Console.Write("Enter the first integer : ");
int num1 = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter second integer : ");
int num2 = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the third integer : ");
int num3 = Convert.ToInt32(Console.ReadLine());
double average = (num1 + num2 + num3) / 3.0;
Console.WriteLine($"The average of {num1} , {num2} , and {num3} is : {average}");
} }
• The program prompts the user to enter three integers using ' Console.Write ' and ' Console.ReadLine ' .
• ' Convert.ToInt32 ' is used to convert the user input (strings) to integers .
• The three integers are stored in variables ' num1 ' , ' num2 ' , and ' num3 ' .
• The average is calculated by adding the three integers and dividing the sum by 3.0 to ensure a decimal result (' / 3.0 ') .
• The result is displayed using ' Console.WriteLine ' along with the entered integers and the calculated average .
