div_add_ipaddr.c

一些linux基本函数的测试集,给像我一样的新手看看

#include <stdio.h>

int main()
{
	char dmz_ip[20];
	char out[20];
	char *tmp_ip=(char *)malloc(20);
	tmp_ip="192.168.1.1";
	char *end=strrchr(tmp_ip,'.');	
	strncpy(dmz_ip,tmp_ip,end-tmp_ip+1);
	dmz_ip[end-tmp_ip+1]='\0';
	
	char *last_ip = "101";
  sprintf(dmz_ip,"%s%s",dmz_ip,last_ip);
  
  printf("endip:%s",dmz_ip);
}

//result:endip:192.168.1.101