# #1,108 – The Bitwise OR Operator

You can use the | operator to do a bitwise OR operation between two integer-based values.

An OR operation is applied to two different bits, returning true if either one or both input bits are true.  Here is a truth table showing the output value for all possible input combinations.

• 0 | 0 = 0
• 0 | 1 = 1
• 1 | 0 = 1
• 1 | 1 = 1

You can use the | operator on two arbitrary integer values as shown below.  The OR operation will be applied to the two integer values, one bit at a time.

```            int n1 = 12;
int n2 = 10;
int result = n1 | n2;
Console.WriteLine("{0} | {1} = {2}", n1, n2, result);
```

It may help to use hex notation in order to better understand how the OR operation works on each bit.

```            int n1 = 0xC;  // 12 (dec) or 1100 (bin)
int n2 = 0xA;  // 10 (dec) or 1010 (bin)

// result = 1110
int result = n1 | n2;
```

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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.