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What will the output of following C code?
main()
{
int i=0;
while(+(+i--)!=0)
i-=i++;
printf("%d",i);
}

A.	0	B.	-1
C.	-2	D.	1

Answer and Explanation

Answer:-1

Explanation:
Unary + is the only dummy operator in C. So it has no effect on the expression and now the while loop is, while(i--!=0) which is false and so breaks out of while loop. The value –1 is printed due to the post-decrement operator.

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