OPERATOR:  assignment:
 =  +=  -=  *=  /=  div=  %=  <<=  >>=  >>>=  &=  |=  ^=


The assigment operators are used set the value of an operand by permitting shorthand versions of standard arithmetic operations. Please refer to the arithmetic operators.
 
  =  
The basic assignment operator is the equal sign, which assigns the value (literal or variable) on its right to the variable on its left:
 
Code:
 x = a;

 
 +=  -=  *=  /=  div=  %=  
The equal sign is combined with the +, -, *, /, div and % operators to give the following shorthand versions of standard arithmetic operations:
 
Code:
a += b instead of a = a + b
a -= b instead of a = a - b
a *= b instead of a = a * b
a /= b instead of a = a / b
a div= b instead of a = a div b
a %= b instead of a = a % b

 <<=  >>=  >>>=  &=  |=  ^=  
The equal sign can also be combined with the <<, >>, >>>, &, |, and ^ operators to give the following shorthand versions of standard bitwise operations:
 
Code:
a <<= b instead of a = a << b
a >>= b instead of a = a >> b
a >>>= b instead of a = a >>> b
a &= b instead of a = a & b
a |= b instead of a = a | b
a ^= b instead of a = a ^ b


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