while(+(+i--)!=0)

    main()

{

    int i=0;

    while(+(+i--)!=0)

         i-=i++;

    printf("%d",i);

}

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.

Blog Author: Vijay Kumar

Go to: Java Aptitude, C C++ Aptitude