Example:
Input:
First number: 10
Second number: 20
Output:
Addition of 10 and 20 is = 30
Program:
using System;
class AddTwoNumbers {
static void Main() {
try{
//declare two variables
int a = 0;
int b = 0;
//input numbers
Console.Write("Enter first number: ");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter second number: ");
b = Convert.ToInt32(Console.ReadLine());
//calculating sum
int sum = a+b;
Console.WriteLine("Addition of " + a + " and " + b + " is = " + sum);
}
catch(Exception ex){
Console.WriteLine("Error: " + ex.ToString());
}
}
}
Output
Enter first number: 10
Enter second number: 20
Addition of 10 and 20 is = 30
Program:
using System;
class AddTwoNumbers {
//defining function
static int sumOfTwoNumber(int x, int y){
return x+y;
}
//main function
static void Main() {
try{
//declare two variables
int a = 0;
int b = 0;
//input numbers
Console.Write("Enter first number: ");
a = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter second number: ");
b = Convert.ToInt32(Console.ReadLine());
//calculating sum by calling the function
int sum = sumOfTwoNumber(a,b);
Console.WriteLine("Addition of " + a + " and " + b + " is = " + sum);
}
catch(Exception ex){
Console.WriteLine("Error: " + ex.ToString());
}
}
}
Output
Enter first number: 10
Enter second number: 20
Addition of 10 and 20 is = 30