11.9 Programming Exercises

Exercise 11-1: Write a set of inline functions, clear_bit and test_bit, to go with the set_bit operation defined in Example 11-2. Write a main program to test these functions.

Exercise 11-2: Write a program to draw a 10-by-10 bitmapped square.

Exercise 11-3: Change Example 11-1 so it draws a white line across a black background.

Exercise 11-4: Write a program that counts the number of bits set in an integer. For example, the number 5 (decimal), which is 0000000000000101 (binary), has two bits set.

Exercise 11-5: Write a program that takes a 32-bit integer (long int) and splits it into eight 4-bit values. (Be careful of the sign bit.)

Exercise 11-6: Write a program that will take all the bits in a number and shift them to the left end. For example, 01010110 (binary) would become 11110000 (binary).