Question 1: Write a function which has an int parameter n, makes an integer mask having the bit 1 at the nth place from the rightmost bit, and returns the mask. For illustration, when n = 5 is passed to the function, the function will return 0x20 (Note that 0x20 is 00000000 00000000 00000000 00100000).
Question 2: Write a function which has two int parameters num and n, and returns TRUE when the nth bit in num is 1, otherwise FALSE. This function must use the function in the above problem (1). (Be careful how to handle Boolean values in C.)
Question 3: Write down a function which has a single int parameter n and returns an int: 0 if n is negative, or else 1. You are not allowed to simply check the integer value, and must use the function in the above problem (2).
Question 4: Write down a function which has four unsigned char parameters, combines the four one-byte integer values into an unsigned integer, and returns the unsigned integer. When the four one-byte integers are combined, the first value should be used for the first byte in the resulting unsigned integer, the 2nd value for the second byte, the 3rd value for the 3rd byte, and the 4th value for the last byte.
Question 5: Write down a function which has int parameter n, makes another kind of mask having n bit 1’s from the left most bit and 32- n bit 0’s next. The mask is called netmask in this seminar, and the function will return the netmask. (Note that a netmask consists of two parts of bit 1’s and bit 0’s.)
Question 6: Write a function which has two unsigned int parameters of an IPv4 address (that is, an unsigned int) and a netmask (that is, an unsigned int), and returns the network id part in the IPv4 address. (Note that the network id part in an IPv4 address is obtained from the address by clearing some bits that are indicated by the bit 0’s in a netmask.)
Question 7: Write down a function to check odd-parity of a given int parameter. That is that the function returns 1 when the number of bit 1's is odd, or else 0.
Question 8: Write a main function which tests all the functions in (1) – (7).
• The test data can be hard-coded in the main function, and each function must be tested at least 5 times.
• The main function must appear before any other functions.
• When you print integers, you must use the format specifier printing integers in the hexadecimal notation.
• You mut use only one C file for this assignment.
• You must not put any printf() in the functions in (1) – (7).