How To Sum Two Number In C# Using Console

bySergio Margino •
0

 How To Sum Two Number 

In C# Using Console



In C# we can sum two numbers by taking input numbers from the users in terminal. In this blog I am going to discuss about how to take users input and sum operation.


In C# there are five operators available such as "+" for addition ,"-" for substraction ,"*" for multiplication ,"/" for division and "%" for modules ( reminder ). For addition we are going to use "+" operator.


We have tow different methods to add numbers in C# are

  • Pre-defined Inputs 
  • Taking user input 

Pre-defined Inputs Method ?

In this method the user is already defined the values of two numbers. Follow the Code .

1.Taking input values :-

 In this part we have to define variables .
For a=23, and b=35,
We are going to define variables by names a and b.


Code:-
 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
 /


 namespace HACKINGSTAN
 {
   public class Program
   {
     public static void Main(string[] args)
     {
       //Code For Sum
       int a=23;
       int b=35;
       
     }
   }
 }


2.Printing Elements (Answer):-

After defining variables then we have to print the the elements . To print we use "Console.WriteLine(a+b);" or "Console.WriteLine("The Sum of a+b is: {0} ", a+b); " .




Code:- 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
 

 namespace HACKINGSTAN
 {
   public class Program
   {
     public static void Main(string[] args)
     {
       //Code For Sum
       int a=23;
       int b=35;
       
   Console.WriteLine(a+b);
   Console.ReadLine();
       
     }
   }
 }

Output :- 

Output is shown on the picture .


Taking user input :-
We can ask input or values of a and b from the user by using this method. To use this method follow the steps that written below .

1. Ask The User For Input :
We can ask the user to enter the values of a and b by using "Console.WriteLine("Enter The First Number: ");" . 



2. Storing input in variable :
After getting inputs we have to store the input in a variable . For numbers we use int datatype of variable. If a= first number and b=second number then we have to declare the first number as " int a; " . 


3. Change The Variable type to Integers :
After storing the input we have to change the type of the input, because every input of variable is stored in String(Character) . To change String Value To Inter Use 
" a=Convert.ToInt32(Console.ReadLine()); ".
For second number b repeat the same process from 1-3 method. 



4. Printing The Result In Console :
We can print the results by using two methods. Direct Printing method by using "Console.WriteLine(a+b);" . Second Method Is based On parentheses of 0 and 1 as "Console.WriteLine("The Value Of a+b is : {0},a+b);" .

Output :- 
Output is shown in the below image .


Code For This Method :-

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


 namespace HACKINGSTAN
 {
   public class Program
   {
     public static void Main(string[] args)
     {
       //Code For Sum
      Console.WriteLine("Enter The First Number");
       int a;
       a=Convert.ToInt32(Console.ReadLine());
      Console.WriteLine("Enter The second Number");
       int b;
       b=Convert.ToInt32(Console.ReadLine());
      Console.WriteLine("The Sum Of a and b : {0}", a+b);
      Console.ReadLine();
       
     }
   }
 }


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