C# Program to perform all Basic Arithmetic Operations

Basic arithmetic operators in C# allow you to perform mathematical calculations such as addition, subtraction, multiplication, division, and modulus operations. These operators work with numeric data types and form the foundation of mathematical computations in C#.

Arithmetic Operators

Syntax

Following is the basic syntax for arithmetic operations −

result = operand1 + operand2;  // Addition
result = operand1 - operand2;  // Subtraction
result = operand1 * operand2;  // Multiplication
result = operand1 / operand2;  // Division
result = operand1 % operand2;  // Modulus

Using Basic Arithmetic Operations

Example

using System;

class ArithmeticOperations {
   static void Main(string[] args) {
      int num1 = 50;
      int num2 = 25;
      int result;
      
      // Addition
      result = num1 + num2;
      Console.WriteLine("Addition: {0} + {1} = {2}", num1, num2, result);
      
      // Subtraction
      result = num1 - num2;
      Console.WriteLine("Subtraction: {0} - {1} = {2}", num1, num2, result);
      
      // Multiplication
      result = num1 * num2;
      Console.WriteLine("Multiplication: {0} * {1} = {2}", num1, num2, result);
      
      // Division
      result = num1 / num2;
      Console.WriteLine("Division: {0} / {1} = {2}", num1, num2, result);
      
      // Modulus
      result = num1 % num2;
      Console.WriteLine("Modulus: {0} % {1} = {2}", num1, num2, result);
   }
}

The output of the above code is −

Addition: 50 + 25 = 75
Subtraction: 50 - 25 = 25
Multiplication: 50 * 25 = 1250
Division: 50 / 25 = 2
Modulus: 50 % 25 = 0

Using Increment and Decrement Operators

Example

using System;

class IncrementDecrement {
   static void Main(string[] args) {
      int number = 10;
      
      Console.WriteLine("Original value: " + number);
      
      // Post-increment
      Console.WriteLine("Post-increment: " + number++);
      Console.WriteLine("After post-increment: " + number);
      
      // Pre-increment
      Console.WriteLine("Pre-increment: " + ++number);
      
      // Post-decrement
      Console.WriteLine("Post-decrement: " + number--);
      Console.WriteLine("After post-decrement: " + number);
      
      // Pre-decrement
      Console.WriteLine("Pre-decrement: " + --number);
   }
}

The output of the above code is −

Original value: 10
Post-increment: 10
After post-increment: 11
Pre-increment: 12
Post-decrement: 12
After post-decrement: 11
Pre-decrement: 10

Working with Different Data Types

Example

using System;

class DataTypeArithmetic {
   static void Main(string[] args) {
      double num1 = 15.5;
      double num2 = 4.2;
      
      Console.WriteLine("Double Addition: {0} + {1} = {2}", num1, num2, num1 + num2);
      Console.WriteLine("Double Division: {0} / {1} = {2:F2}", num1, num2, num1 / num2);
      
      float f1 = 10.5f;
      float f2 = 3.2f;
      Console.WriteLine("Float Multiplication: {0} * {1} = {2:F1}", f1, f2, f1 * f2);
      
      // Integer division vs floating-point division
      int a = 7, b = 2;
      Console.WriteLine("Integer division: {0} / {1} = {2}", a, b, a / b);
      Console.WriteLine("Floating division: {0} / {1} = {2:F1}", a, b, (double)a / b);
   }
}

The output of the above code is −

Double Addition: 15.5 + 4.2 = 19.7
Double Division: 15.5 / 4.2 = 3.69
Float Multiplication: 10.5 * 3.2 = 33.6
Integer division: 7 / 2 = 3
Floating division: 7 / 2 = 3.5

Conclusion

Arithmetic operators in C# provide the foundation for mathematical calculations in programs. Understanding the difference between integer and floating-point division, as well as pre and post increment/decrement operators, is essential for accurate mathematical computations and program logic.