Arithmetic operators in C# are used to perform mathematical calculations like Addition, Subtraction, Multiplication, Division, and Modulus. Basically, these C# Arithmetic operators work on two operands. Hence these are called binary operators.

Let us see an example to clearly understand them. The below table shows the list of available C# Arithmetic operators and explains their operations.

C# Arithmetic Operators | Operation | Example |
---|---|---|

+ | Addition | 3 + 2 = 5 |

– | Subtraction | 3 – 2 = 1 |

* | Multiplication | 3 * 2 = 6 |

/ | Division | 3 / 2 = 1 |

% | Modulus | 3 % 2 = 1 |

## C# Arithmetic Operators Example

In the following C# example, we are using an integer variable x and double variable y as two operands of the operator and performing arithmetic operations on them.

When applying division/operator, we must keep in mind the following points.

- The division of any number by zero gives an application error. Ex: x/0
- By default, the result will always round to its nearest whole number. Ex: 11/2 gives 5.
- Variables must be of the same data type (int-int, double-double, etc.) unless they can implicitly convert. In Implicit conversion, the System allows conversion in type-safe, and no data can be lost.
- If we want the accurate value of division, for ex: 3/2 = 1.5, where 3 and 2 are integer values, we have to typecast the result to float type explicitly.

using System; class Arithmetic_Operations { static void Main() { int x = 10; int y = 8; int add, sub, multi, div_int, modulus; float div_float; add = x+y; Console.WriteLine("{0} + {1} = {2}", x, y, add); sub = x-y; Console.WriteLine("{0} - {1} = {2}", x, y, sub); multi = x*y; Console.WriteLine("{0} * {1} = {2}", x, y, multi); div_int = x/y; Console.WriteLine("{0} / {1} = {2}", x, y, div_int); div_float = (float)x/y; Console.WriteLine("{0} / {1} = {2}", x, y, div_float); modulus = x%y; Console.WriteLine("{0} % {1} = {2}", x, y, modulus); } }

In the above example, integer variables x and y are the two operands on which we are applying arithmetic operators(+, -, *, /, %).

Coming to the accurate value of 10/8, we have explicitly converted to type float and stored the C# result in a float variable div_float.