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

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+// 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;
+}