void main(void)
{
     //Declare below a 8-bit unsigned number called foo

         foo = 0xAB;

    // Declare any additional variables if needed




     //Initialize foo to the hexadecimal value AB



     //Write code (possibly more than 1 line) to swap the
     // lower and upper 4-bits of foo; After executing your
     // statements foo should have the value BA in hex.






     // The following if-then-else statement
     // prints the success or failure of your swap code written above
     if (foo == 0xBA) {
          printf(“Output of Homework 2: Swap Successful”);
      else {
          printf(“Output of Homework 2: Swap Failed");
      }


}