Calculate sum of two numbers – Example program in C#

Calculate sum of two numbers in C# – Example program in C#

In this tutorial, we will discuss the concept of  Calculate sum of two numbers – Example program in C#

In this topic, we are going to learn how  to add two integer numbers using plus operator in C# programming language

Sum of two numbers using variable

Program 1

// Calculate sum of two integers in C# program
    
using System;

public class Addition
{
    public static void Main(string[] args)
    {
        int num1=35;
        int num2=30;
        int sum=num1+num2;
        Console.WriteLine ("The sum of two numbers: "+sum);
    }
}

When the above code is executed, it produces the following result

The sum of two numbers: 65

 

Sum of two numbers using user input

Program 2

In this program, the user asked to enter two integer values. these two integers are stored in variables n1 and n2 respectively then two numbers are added using + operator and the result is stored in the sum variable

// Calculate addition of two integers in C# program
    
using System;

public class Sum_Of_Two_Num
{
    public static void Main(string[] args)
    {
        int n1, n2, sum;
         Console.WriteLine("Find sum of two numbers: ");
        Console.Write("Input number to n1: ");
        n1=Convert.ToInt32(Console.ReadLine());
        Console.Write("Input number to n2: ");
        n2=Convert.ToInt32(Console.ReadLine());
        sum=n1+n2;
        Console.WriteLine ("The Addition of given two integers: "+sum);
        Console.ReadKey();
    }
}

When the above code is executed, it produces the following result

Find sum of two numbers:
Input number to n1: 123
Input number to n2: 234
The Addition of given two integers: 357

 

In the above program, two integer values 123,234 (get input from the user) are stored in n1 and n2. Then n1 and n2 are added using the plus(+) operator.

Then the result is stored in another variable sum.

Finally, the result is displayed on the screen using display statements in C#

 

Sum of two floating point numbers using user input

In this program, the user asked to enter two floating point values. these two floats are stored in variables num1 and num2 respectively. Then two numbers are added using + operator and the result is stored in the result variable

Program 3

//Calculate sum of two floating point numbers 
using System;

public class SumOfFloat
{
    public static void Main(string[] args)
    {
        Console.WriteLine ("Enter two floating point numbers");
        float num1=float.Parse(Console.ReadLine());
         float num2=float.Parse(Console.ReadLine());
         
         Console.Write("The sum of two floats: "+num1+"+"+num2+"=");
         float result=num1+num2;
         Console.WriteLine(result);
    }
}

When the above code is executed, it produces the following result

Enter two floating point numbers
34.5
12.6
The sum of two floats: 34.5+12.6=47.1

 

 

In the above program, two floating-point  values 34.5,12.6 (get input from the user) are stored in num1 and num2. Then num1 and num2 are added using the plus(+) operator.

Then the result is stored in another variable result.

Finally, the result is displayed on the screen using display statements in C#

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