The exercise can be completed by following these steps:

1) Create a C program called ex6.c in C that compiles and runs.

2) Create a makefile to compile and link ex6.c to produce executable ex6

Create a C program that takes user input as separate lines.

As described in earlier discussion sessions, there are several bit operations available in C:

1) Bitwise OR (|)

2) Bitwise AND (&)

3) Bitwise XOR (^)

4) Bit SHIFT (>)

Using the operations, you can mask out certain bits (i. e., zero them), turn on specific bits (i. e., set them to 1), and select specific bits.

Your program will run on the shell command line and will provide a simple command line interface that accepts the following commands. By default, do not print a prompt. All output values are in hexadecimal format.

1) C x n: clear - read in x in hex format and n in decimal, output x with bit n (from LSB starting at 0) cleared

2) M x m: read in x and m in hex and output x masked by m

3) Q: quit

4) S x n: set - read in x in hex format and n in decimal, output x with bit n (from LSB starting at 0) set

5) V x n: read in x in hex and n in decimal, output bit n of x (from LSB starting at 0)

Clear means set a bit to 0. Masking x with mask m means that only all bits of x where the mask is 0 are cleared. Set means set a bit to 1. The maximum input hex value is 0x7 and the maximum decimal value is 31; there are no negative inputs, and you are not required to check for these.

Example Output:

storm:1% make

cc -o ex6 ex6.c

storm:2% ./ex6

V f0f0 0

0

S f0f0 8

f1f0

C f0f0 0

f0f0

M f0f0

f0f0

M 7 e

6

Q