29 lines
759 B
C
29 lines
759 B
C
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/*
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* C Program to Get IP Address
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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int main()
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{
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int n;
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struct ifreq ifr;
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char array[] = "eth0";
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n = socket(AF_INET, SOCK_DGRAM, 0);
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//Type of address to retrieve - IPv4 IP address
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ifr.ifr_addr.sa_family = AF_INET;
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//Copy the interface name in the ifreq structure
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strncpy(ifr.ifr_name, array, IFNAMSIZ - 1);
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ioctl(n, SIOCGIFADDR, &ifr);
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close(n);
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//display result
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printf("IP Address is %s - %s\n", array, inet_ntoa(( (struct sockaddr_in *)&ifr.ifr_addr )->sin_addr) );
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return 0;
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}
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