#include
#include
#include
#include
#include
#include
#include
#include
#include
/*****************************************************
struct sockaddr_in {
short int sin_family;
unsigned short int sin_port;
struct in_addr sin_addr;
unsigned char sin_zero[8];
};
struct in_addr {
in_addr_t s_addr;
};
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* unsigned short int htons(unsigned short int hostshort):
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2?÷?ú×????ò×?????????×????ò??????·???????8×???
* unsigned long int htonl(unsigned long int hostlong):
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* unsigned short int ntohs(unsigned short int netshort)
* unsigned long int ntohl(unsigned long int netlong)
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IP???·×???????3??
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1.
struct sockaddr_in ina??
ina.sin_addr.s_addr=inet_addr("202.206.17.101")??
unsigned long int inet_addr(const char *cp);??????????????×?????±í????IP???·×?·???????×?????????·????¤????????????????????????×????ò????????
2.int inet_aton(const char *cp, struct in_addr *inp); ???????????????????????ù??????·???1???§°?·???0
3??char *inet_nota(struct in_addr in);????????????????IP×?????????????×???±í????×?·?????????
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1.void bzero(void * s,int n);??s???¨?????·?°n×????è??0
2.void bcopy(const void * src,void * dest,int n)????src???¨?????????ò??±???dst??????
3.int bcmp(const void * s1,const void * s2,int n);????±??????????à??·???0??·??ò·???·?0
**********************************************************************************************/
int main(int argc, char **argv)
{
struct sockaddr_in sockadd;
int i = 0;
sockadd.sin_addr.s_addr = inet_addr("192.168.0.244");//将点字符串格式的IP转换为unsigned int 型的
char *p;
p = (char *)&sockadd.sin_addr.s_addr;
for(i = 0 ;i< 4;i++){
printf("0x%2x\n",*p)；//打印每个字节的数据
p++;
}
//sockaddr.sin_addr.s_addr = 0x012BA8C0;
printf("%s\n",inet_ntoa(sockadd.sin_addr));//将unsigned int 类型的IP转换为点字符串型的
}