Review | Programming from the Ground Up

Convert the decimal number 5,294 to binary.
What number does 0x0234aeff represent? Specify in binary, octal, and decimal.
Add the binary numbers 10111001 and 101011.
Multiply the binary numbers 1100 1010110.
Convert the results of the previous two problems into decimal.
Describe how AND, OR, NOT, and XOR work.
What is masking for?
What number would you use for the flags of the open system call if you wanted to open the file for writing, and create the file if it doesn't exist?
How would you represent -55 in a thirty-two bit register?
Sign-extend the previous quantity into a 64-bit register.
Describe the difference between little-endian and big-endian storage of words in memory.

Go back to previous programs that returned numeric results through the exit status code, and rewrite them to print out the results instead using our integer to string conversion function.
Modify the integer2string code to return results in octal rather than decimal.
Modify the integer2string code so that the conversion base is a parameter rather than hardcoded.
Write a function called is_negative that takes a single integer as a parameter and returns 1 if the parameter is negative, and 0 if the parameter is positive.

Modify the integer2string code so that the conversion base can be greater than 10 (this requires you to use letters for numbers past 9).
Create a function that does the reverse of integer2string called number2integer which takes a character string and converts it to a register-sized integer. Test it by running that integer back through the integer2string function and displaying the results.
Write a program that stores likes and dislikes into a single machine word, and then compares two sets of likes and dislikes for commonalities.
Write a program that reads a string of characters from STDIN and converts them to a number.