C# program to Subtract two numbers using function – Example program

In this tutorial, we will discuss the concept of C# program to Subtract two numbers using function – Example program

In this topic, we are going to learn how to subtract two numbers using function in C# programming language

Subtraction of two numbers in C#

Subtraction of two numbers using variable

In this program, the user declare and initialize two variables num1 and num2. Then two numbers are subtracted (num1 – num2) using minus (-) operator and then assign the result to third (diff) variable

Program 1

//Write a program calculate subtraction of two numbers using function
using System; 
public class Dif_Two_Num_Fun { //class definition
    public static int sub_Num(int num1,int num2) { //user defined function with argument
        int diff; 
        diff=num1-num2; //Calculate difference of given numbers
        return diff; 
        
    } public static void Main() { 
        int num1=450; //Declare and initialize variable
        int num2=150; 
        Console.WriteLine("The subtraction of {0} and {1} is: {2}: ",num1,num2,sub_Num(num1,num2)); } }
        //Display result on the screen

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

The subtraction of 450 and 150 is: 300:

Program 2

In this program, the user is asked to enter two integer values. These two integers are stored in variables n1 and n2 respectively .Then two numbers are subtracted using – operator and the result is stored in the difRes variable. finally the result is displayed on the screen

// Write a program calculate subtract of two numbers using function
using System; 
public class Sub_Two_Num_Fun { 
    public static int sub_Num(int num1, int num2) { //function definition
        int difRes; //declare integer variable
        difRes=num1-num2; //calculate difference
        return difRes; 
        
    }
    public static void Main() { 
        Console.Write("Enter number for n1: "); 
    int n1=Convert.ToInt32(Console.ReadLine()); 
    //get input from the user for n1
    Console.Write("Enter number for n2: "); 
    int n2=Convert.ToInt32(Console.ReadLine()); 
    //get input from the user for n2
    Console.WriteLine("The difference of {0} and {1} is: {2}: ",n1,n2,sub_Num(n1,n2)); } }
    //display result on the screen

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

Enter number for n1: 4567
Enter number for n2: 3456
The difference of 4567 and 3456 is: 1111:

In the above program, two integer values 4567,3456 (get input from the user) are stored in n1 and n2. Then n1 and n2 are subtracted using the minus(-) operator.

Then the result is stored in another variable defRes.

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

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