= += -= *= /= %= <<= >>= &= ^= |== is the obvious one. It takes the result of the expression on the right and assigns it to the variable on the left (lvalue).
	main ()
        {
	  int a, b=4, c=10;
	  a = b + c;
	}
I know this is stating the obvious, but:
	main ()				main()
	{				{
	  int a=4;			  int a=4;
	  a = a * 4;			  a *= 4;
	}				}
The rule is as follows:
The lvalue is multiplied by the rvalue and the result assigned to the lvalue.
Here is another example.
	main()				main()
	{				{
	    int a=10, b=2;	            int a=10, b=2;
	    a /= b * 5;		            a = a / (b*5);
	}				}
Again both preduce the same answer (1).
 Increment (++) and Decrement (--)
Increment (++) and Decrement (--) Bit shifting ( >>= <<= )
Bit shifting ( >>= <<= ) Operator precedence table.
Operator precedence table.
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