Programming Exercises

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Programming Exercises

1. Write a function that converts a binary string to a numeric value. That is, if you have

    char * pbin = "01001001"; 

   then you can pass pbin as an argument to the function and have the function return an int value of 25 .

2. Write a program that reads two binary strings as command-line arguments and prints the results of applying the ~ operator to each number and the results of applying the & , , and ^ operators to the pair. Show the results as binary strings.

3. Write a function that takes an int argument and returns the number of ON bits in the argument.

4. Write a function that takes two int arguments: a value and a bit position. Have the function return 1 if that particular bit position is 1, and have it return 0 otherwise .

5. Write a function that rotates the bits of an unsigned int by a specified number of bits to the left. For instance, rotate_l(x,4) would move the bits in x four places to the left, and the bits lost from the left end would reappear at the right end. That is, the bit moved out of the high-order position is placed in the low-order position.

6. Write a program with the same functionality as Listing 15.3. However, instead of using a structure with bit fields, it should use an unsigned int and the bitwise operators.

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