In this tutorial, we will discuss the Function to calculate the sum of two numbers in C#
In this topic, we are going to learn how to write a program to add two numbers using function in C# programming language
Program 1
//Write a program calculate sum of two numbers using function using System; public class Sum_Two_Num_Fun { public static int sum_Num(int num1, int num2) { int total; total=num1+num2; return total; } public static void Main() { int num1=45; int num2=56; Console.WriteLine("The sum of {0} and {1} is: {2}: ",num1,num2,sum_Num(num1,num2)); } }
When the above code is executed, it produces the following result
The sum of 45 and 56 is: 101:
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 total variable
// Write a program calculate sum of two numbers using function using System; public class Sum_Two_Num_Fun { public static int sum_Num(int num1, int num2) { int total; total=num1+num2; return total; } public static void Main() { Console.Write("Enter number for n1: "); int n1=Convert.ToInt32(Console.ReadLine()); Console.Write("Enter number for n2: "); int n2=Convert.ToInt32(Console.ReadLine()); Console.WriteLine("The sum of {0} and {1} is: {2}: ",n1,n2,sum_Num(n1,n2)); } }
When the above code is executed, it produces the following result
Enter number for n1: 55 Enter number for n2: 66 The sum of 55 and 66 is: 121:
In the above program, two integer values 55,66 (get input from the user using Scanner class) are stored in n1 and n2. Then given two numbers are added using the plus(+) operator.
Then the result is stored in another variable total inside the sumNum() function.
Finally, the result is displayed on the screen using display statements (Calling the function) in C#
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