C programming

Description

Each computer connected to the UTS network has a unique identification number called the "IP address". An IP address has the following form: octet1.octet2.octet3.octet4, where octet1, octet2, octet3 and octet4 are integer numbers between 0 and 255 (inclusive). Consider the following struct definition to store an IP address: struct ipaddr { int octet1; int octet2; int octet3; int octet4; }; typedef struct ipaddr ipaddr_t; In this task you are required to implement the functions given below by following the function descriptions. /* This function prints a ipaddr_t variable on the terminal in the following format octet1.octet2.octet3.octet4 No spaces, no new line in the end, octets are separated by a dot. Inputs: ip - ipaddr_t variable that needs to be printed */ void print_ipaddr(ipaddr_t ip) /* An IP address is valid if all 4 octets have values between 0 and 255(inclusive). The function checks if the input ip address is valid. Inputs: ip - ipaddr_t input IP address variable Return: 1 - if input ip is valid 0 - otherwise */ int is_valid(ipaddr_t ip) /* Two IP addresses are equal if all 4 octets of both addresses have identical values. The function checks if two IP addresses are equal. Inputs: ip1 - ipaddr_t input IP address 1 ip2 - ipaddr_t input IP address 2 Return: 1 - if ip1 and ip2 are equal 0 - otherwise */ int is_equal(ipaddr_t ip1, ipaddr_t ip2) /* Two IP addresses are said to be in the same subnet if octet1, octet2 and octet3 have identical values. The function checks if two ip addresses are in the same subnet. Note for students with a networking background: we are considering a simplified definition of a subnet. Use the above definition given for this question. Inputs: ip1 - ipaddr_t input IP address 1 ip2 - ipaddr_t input IP address 2 Return: 1 - if ip1 and ip2 are in the same subnet 0 - otherwise */ int is_same_subnet(ipaddr_t ip1, ipaddr_t ip2) /* The function prompts the user to enter IP addresses in the following format: octet1.octet2.octet3.octet4 in separate lines. If an input IP address is invalid, the function prints the following error message: Invalid input and prompt the user again to give a valid input. The function may scan up to addr_array_len valid IP addresses, or until the user enters -1.-1.-1.-1 as the input, whichever occurs first. Sample run 1 with addr_array_len=5, the function returns 2: > 192.168.1.1 > -192.168.1.1 Invalid input > 192.168.1.2 > -1.-1.-1.-1 Sample run 2 with addr_array_len=2, the function returns 2: > 192.168.1.1 > 192.168.1.2 Inputs: addr_array_len - maximum possible number of inputs, this is the size of the addr_array array. addr_array - valid addresses from the user are saved to this array. Return: the number of valid IP addresses given by the user Post: After the function has been called, addr_array contains the valid IP addresses entered by the user. */ int get_valid_ipaddrs(ipaddr_t addr_array[], int addr_array_len) /* Display IP addresses in the same subnet in addr_array. All addresses in the one subnet should be displayed in the same line, in the same order the addresses were entered. Each address is separated by one space, and each line has a trailing space in the end of the line prior to the new line character. Sample run 1 where addr_array contains the following IP addresses {192.168.1.1, 192.168.2.1, 192.168.1.2, 192.168.1.3} and addr_array_len=4: 192.168.1.1 192.168.1.2 192.168.1.3 192.168.2.1 Input: addr_array - contains IP addresses addr_array_len - the number of IP addresses in the addr_array */ void print_same_subnet(const ipaddr_t addr_array[], int addr_array_len)