#pragma pack(4)
　　#define WIN32_LEAN_AND_MEAN
　　#include
　　#include
　　#include
　　
　　#define ICMP_ECHO 8
　　#define ICMP_ECHOREPLY 0
　　
　　#define ICMP_MIN 8 // minimum 8 byte icmp packet (just header)
　　
　　/* The IP header */
　　typedef struct iphdr {
　　unsigned int h_len:4; // length of the header
　　unsigned int version:4; // Version of IP
　　unsigned char tos; // Type of service
　　unsigned short total_len; // total length of the packet
　　unsigned short ident; // unique identifier
　　unsigned short frag_and_flags; // flags
　　unsigned char ttl;
　　unsigned char proto; // protocol (TCP, UDP etc)
　　unsigned short checksum; // IP checksum
　　
　　unsigned int sourceIP;
　　unsigned int destIP;