user: Demonstrate the C code that generates the assembly output below:

```asm
<print_usage>:
  endbr64
  sub    $0x8,%rsp
  lea    D9(%rip),%rdi
  call   <printf@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  add    $0x8,%rsp
  ret
```

tool_calls: name: read_data
arguments: label: D9
data_type: string

tool: D9: Usage: ipscan [OPTION]...
Search for IP addresses or CIDR blocks in STDIN and print out matched lines.

Loading IP lists:
  -i, --ip-list FILE		load newline-separated list of IP addresses (CIDR notation supported)
  -I, --ip-search IP		add the IP to the list of IP addresses searched for (CIDR notation is supported)

Search options:
  -v, --invert-match		instead of printing lines that match the IP list, print ones that don't
  -p, --match-position IDX	instead of checking against the first IP on the line, check against the IDXth
				Supports negative IDX, counting from right instead from left.
				(-1 = last IP, 1 = first IP, 0 = any position; default: 0)

Output control:
  --dump-ips			instead of running the search dump the computed CIDR blocks to STDOUT
  --verbose			print additional messages to STDERR (default)
  --quiet			don't print messages to STDERR

Miscellaneous:
  -V, --version			print version information and exit
  -h, --help			print this message and exit

Examples:
# Find all communication where neither source nor destination are in a private range:
> cat /var/syslog/* | ipscan -v -I 10.0.0.0/8 -I 192.168.0.0/16 -I 172.16.0.0/12 -p 0
# Find all communication originating from China:
> cat /var/syslog/* | ipscan -i chinese_ranges.txt -p 0

# Simplify a list of IP ranges:
> ipscan -I 10.0.0.0/24 -I 10.0.1.0/24 --dump-ips
	# outputs: 10.0.0.0/23


assistant: ```c
void print_usage() {
  printf("Usage: ipscan [OPTION]...\n"
         "Search for IP addresses or CIDR blocks in STDIN and print out matched lines.\n"
         "\nLoading IP lists:\n"
         "  -i, --ip-list FILE\t\tload newline-separated list of IP addresses (CIDR notation supported)\n"
         "  -I, --ip-search IP\t\tadd the IP to the list of IP addresses searched for (CIDR notation is supported)\n"
         "\nSearch options:\n"
         "  -v, --invert-match\t\tinstead of printing lines that match the IP list, print ones that don't\n"
         "  -p, --match-position IDX\tinstead of checking against the first IP on the line, check against the IDXth\n"
         "\t\t\t\tSupports negative IDX, counting from right instead from left.\n"
         "\t\t\t\t(-1 = last IP, 1 = first IP, 0 = any position; default: 0)\n"
         "\nOutput control:\n"
         "  --dump-ips\t\t\tinstead of running the search dump the computed CIDR blocks to STDOUT\n"
         "  --verbose\t\t\tprint additional messages to STDERR (default)\n"
         "  --quiet\t\t\tdon't print messages to STDERR\n"
         "\nMiscellaneous:\n"
         "  -V, --version\t\t\tprint version information and exit\n"
         "  -h, --help\t\t\tprint this message and exit\n"
         "\nExamples:\n"
         "# Find all communication where neither source nor destination are in a private range:\n"
         "> cat /var/syslog/* | ipscan -v -I 10.0.0.0/8 -I 192.168.0.0/16 -I 172.16.0.0/12 -p 0\n"
         "# Find all communication originating from China:\n"
         "> cat /var/syslog/* | ipscan -i chinese_ranges.txt -p 0\n\n"
         "# Simplify a list of IP ranges:\n"
         "> ipscan -I 10.0.0.0/24 -I 10.0.1.0/24 --dump-ips\n"
         "\t# outputs: 10.0.0.0/23\n");
  exit(0);
}
```