Merge pull request AdarshAddee#43 from Joseph2001-braganza/main

Create IP address and Hostname

.vscode/c_cpp_properties.json

@@ -0,0 +1,20 @@
+{
+ "configurations": [
+ {
+ "name": "Win32",
+ "includePath": [
+ "${workspaceFolder}/**"
+ ],
+ "defines": [
+ "_DEBUG",
+ "UNICODE",
+ "_UNICODE"
+ ],
+ "compilerPath": "D:\\MinGW\\bin\\gcc.exe",
+ "cStandard": "gnu17",
+ "cppStandard": "gnu++14",
+ "intelliSenseMode": "windows-gcc-x86"
+ }
+ ],
+ "version": 4
+}

C/print ip address and hostname.c

@@ -0,0 +1,69 @@
+// C program to display hostname
+// and IP address
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <netdb.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+// Returns hostname for the local computer
+void checkHostName(int hostname)
+{
+ if (hostname == -1)
+ {
+ perror("gethostname");
+ exit(1);
+ }
+}
+
+// Returns host information corresponding to host name
+void checkHostEntry(struct hostent * hostentry)
+{
+ if (hostentry == NULL)
+ {
+ perror("gethostbyname");
+ exit(1);
+ }
+}
+
+// Converts space-delimited IPv4 addresses
+// to dotted-decimal format
+void checkIPbuffer(char *IPbuffer)
+{
+ if (NULL == IPbuffer)
+ {
+ perror("inet_ntoa");
+ exit(1);
+ }
+}
+
+// Driver code
+int main()
+{
+ char hostbuffer[256];
+ char *IPbuffer;
+ struct hostent *host_entry;
+ int hostname;
+
+ // To retrieve hostname
+ hostname = gethostname(hostbuffer, sizeof(hostbuffer));
+ checkHostName(hostname);
+
+ // To retrieve host information
+ host_entry = gethostbyname(hostbuffer);
+ checkHostEntry(host_entry);
+
+ // To convert an Internet network
+ // address into ASCII string
+ IPbuffer = inet_ntoa(*((struct in_addr*)
+ host_entry->h_addr_list[0]));
+
+ printf("Hostname: %s\n", hostbuffer);
+ printf("Host IP: %s", IPbuffer);
+
+ return 0;
+}