## Mathematical Operators

Mathematical Operators

C# supports five mathematical operators, shown in the following table.

Operator Description
`+` Addition
`-` Subtraction
`/` Division
`*` Multiplication
`%` Modulus

One interesting thing about the division operator (`/`) is that when you divide two integers, the fractional part is discarded:

```int num1 = 6; int num2 = 4; double result = num1 / num2; Console.WriteLine(result); //---1---```

Here both `num1` and `num2` are integers and hence after the division result only contains the integer portion of the division. To divide correctly, one of the operands must be a noninteger, as the following shows:

```int num1 = 6; double num2 = 4; double result = num1 / num2; Console.WriteLine(result); //---1.5--- ```

Alternatively, you can use type casting to force one of the operands to be of type double so that you can divide correctly:

```int num1 = 6; int num2 = 4; double result = (double)num1 / num2; Console.WriteLine(result); //---1.5--- ```

The modulus operator (`%`) returns the reminder of a division:

```int num1 = 6; int num2 = 4; int remainder = num1 % num2; Console.WriteLine(remainder); //---2---```

The `%` operator is commonly used for testing whether a number is odd or even, like this:

```if (num1 % 2 == 0) Console.WriteLine("Even"); else Console.WriteLine("Odd");```

Оглавление книги

Оглавление статьи/книги

Генерация: 0.802. Запросов К БД/Cache: 3 / 0
поделиться
Вверх Вниз