Programming: define an integer variable A with an initial value of 12, calculate the value of the expression: a+=a-=a*a, and output the result.
A =12 a * a =144 a-= a * a, where a=- 132 is also the value of this expression; A+=a-=a*a, where a=-264 is also the value of this expression. The code is as follows: # include