Unsigned int representation

Question

 main() {

       unsigned int a=-9;
       printf("%d",a);//gives output -9


       cout<<a;// gives output 9429967287
       getch();

   }

Why it gives different output in both cases?

Do 'printf' and 'cout' treat bit pattern in a different way?

Why is 'printf' not giving the positive answer?

Answer 1

Because you told it to: %d is for printing an argument as a signed int. To print an unsigned int, you should have used %u.