Implementation Of Address Conversion Routines Program using C | Network Lab Exercises

Algorithm Steps:

Step 1: Read the host Ip address

Step 2: Use the system call inet_addr.Send the argument as host ip.

Step 3: It retrun the 32 bit binary ip address.

Step 4: Read the 32 bit binary ip address.

Step 5: Use the system call inet_ntoa.It retrun the value as char* type. It take the argumant as struct in_addr type.

step 6: It return the dotted decimal notation ip address.

C Program To Implement Address Conversion Routines

#include #include #include main() { char host[17],*ptr; long int addr; struct in_addr ad; /* netinet/in.h*/ puts("\n\nEnter the host ID"); gets(host); addr= inet_addr(host); /*convert dotted decimal notation to 32-bit ip addres*/ puts("\n\n32 Bit IP address is:"); printf("\n\n%d",addr); puts("\n\nEnter the 32 bit ip address :\n"); scanf("%d",&ad.s_addr); ptr=inet_ntoa(ad); /*convert ip to dotted decimal*/ puts("\n\nHost ip address is"); printf("\n%s",ptr); }

SAMPLE INPUT OUTPUT:

Enter the host ID

192.43.253.2

32 Bit IP address is:

50146240

Enter the 32 bit ip address :

50146240

Host ip address is

128.240.250.2

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