|                        Bitwise OR operator
 
 exp1 | exp2             Bitwise OR
 exp1, exp2              any integral expression
 
    The | operator performs a bit-by-bit OR operation on exp1 and exp2.
    (A bit of the result is true if either or both of the corresponding
    bits of exp1 or exp2 is true.)  Example:
 
           i = 0x0FF0;
           j = 0xFF00;
           k = i | k;           /* k == 0xFFF0 */

Seealso:


 & 
 | 
 ~ 
 ||