www.pudn.com > linuxsocket.rar > test_address.c

// 示例inet函数族的使用 
#include  
#include  
#include  
#include  
#include  
#include  
 
int main() 
{ 
	char		buffer[32]; 
	int		ret = 0; 
	int		host = 0; 
	int		network = 0; 
	unsigned int	address = 0; 
	struct in_addr	in; 
	 
	in.s_addr = 0; 
 
	/*输入一个以"."分隔的字符串形式的IP地址*/ 
	printf("please input your ip address:"); 
    	fgets(buffer, 31, stdin); 
	buffer[31] = '\0'; 
 
	/*示例使用inet_aton()函数*/ 
	if ((ret = inet_aton(buffer, &in)) == 0) { 
		printf("inet_aton: \t invalid address\n"); 
	} else { 
		printf("inet_aton:\t0x%x\n", in.s_addr); 
	} 
	 
	/*示例使用inet_addr()函数*/ 
	if ((address = inet_addr(buffer)) == INADDR_NONE) { 
		printf("inet_addr: \t invalid address\n"); 
	} else { 
		printf("inet_addr:\t0x%lx\n", address); 
	} 
 
	/*示例使用inet_network()函数*/ 
	if ((address = inet_network(buffer)) == -1) { 
		printf("inet_network: \t invalid address\n"); 
	} else { 
		printf("inet_network:\t0x%lx\n", address); 
	} 
	 
	/*示例使用inet_ntoa()函数*/ 
	if (inet_ntoa(in) == NULL) { 
		printf("inet_ntoa: \t invalid address\n"); 
	} else { 
		printf("inet_ntoa:\t%s\n", inet_ntoa(in)); 
	} 
 
	/*示例使用inet_lnaof()与inet_netof()函数*/ 
	host = inet_lnaof(in); 
	network =  inet_netof(in); 
	printf("inet_lnaof:\t0x%x\n", host); 
	printf("inet_netof:\t0x%x\n", network); 
 
	in = inet_makeaddr(network, host); 
	printf("inet_makeaddr:0x%x\n", in.s_addr); 
 
	return 0; 
}