Predict the output or error(s) for the following

Predict the output or error(s) for the following

main()
{
int c=- -2;
printf("c=%d",c);
}




Answer:
c=2;
Explanation:
Here unary minus (or negation) operator is used twice. Same maths rules applies,
ie. minus * minus= plus.
Note:
However you cannot give like --2. Because -- operator can only be applied to
variables as a decrement operator (eg., i--). 2 is a constant and not a variable.