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标题:c++ 编程 怎么编写“程序运行后,按任意键结束再按就继续”
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C学徒
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c++ 编程 怎么编写“程序运行后,按任意键结束再按就继续”
我是个刚学习编程的,就是因为本专业的课程设计要小小的写一个程序,其实在网上搜源代码就行,可是我搜的这个运行后就一直执行,听老师分析了一下,说是要写个“按任意键结束”就行了,不知为啥,就突然对这个感兴趣了,然后就搜到这个论坛,快速注册了一个账号,来求助。
这是整个程序
#include <winsock2.h>                    /*windows socket的头文件,系统定义的*/
#include <windows.h>
#include <ws2tcpip.h>
#include <stdio.h>
#include <stdlib.h>
#pragma comment(lib,"ws2_32.lib")        /*链接API相关连的Ws2_32.lib静态库*/
#define MAX_HOSTNAME_LAN 255
#define SIO_RCVALL _WSAIOW(IOC_VENDOR,1)
#define MAX_ADDR_LEN 16

struct ipheader {
    unsigned char ip_hl:4;                /*header length(报头长度)*/
    unsigned char ip_v:4;                /*version(版本)*/
    unsigned char ip_tos;                /*type os service服务类型*/
    unsigned short int ip_len;            /*total length (总长度)*/
    unsigned short int ip_id;            /*identification (标识符)*/
    unsigned short int ip_off;            /*fragment offset field(段移位域)*/
    unsigned char ip_ttl;                /*time to live (生存时间)*/
    unsigned char ip_p;                    /*protocol(协议)*/
    unsigned short int ip_sum;            /*checksum(校验和)*/
    unsigned int ip_src;                /*source address(源地址)*/
    unsigned int ip_dst;                /*destination address(目的地址)*/
};                                        /* total ip header length: 20 bytes (=160 bits) */

typedef struct tcpheader {
    unsigned short int sport;            /*source port (源端口号)*/
    unsigned short int dport;            /*destination port(目的端口号)*/
    unsigned int th_seq;                /*sequence number(包的序列号)*/
    unsigned int th_ack;                /*acknowledgement number(确认应答号)*/
    unsigned char th_x:4;                /*unused(未使用)*/
    unsigned char th_off:4;                /*data offset(数据偏移量)*/
    unsigned char Flags;                /*标志全*/
    unsigned short int th_win;            /*windows(窗口)*/
    unsigned short int th_sum;            /*checksum(校验和)*/
    unsigned short int th_urp;            /*urgent pointer(紧急指针)*/
}TCP_HDR;

typedef struct udphdr {
    unsigned short sport;                /*source port(源端口号)*/
    unsigned short dport;                /*destination port(目的端口号)*/
    unsigned short len;                    /*udp length(udp长度)*/
    unsigned short cksum;                /*udp checksum(udp校验和)*/
}UDP_HDR;

void main(){
   
    SOCKET sock;
    WSADATA wsd;
    DWORD dwBytesRet;
    unsigned int optval = 1;
    unsigned char *dataudp,*datatcp;
    int i,pCount=0,lentcp, lenudp;
    SOCKADDR_IN sa,saSource, saDest;
    struct hostent FAR * pHostent;
    char FAR name[MAX_HOSTNAME_LAN];
    char szSourceIP[MAX_ADDR_LEN], szDestIP[MAX_ADDR_LEN],RecvBuf[65535] = {0};
    struct udphdr *pUdpheader;
    struct ipheader *pIpheader;
    struct tcpheader *pTcpheader;
    WSAStartup(MAKEWORD(2,1),&wsd);
    if ((sock = socket(AF_INET, SOCK_RAW, IPPROTO_IP))==SOCKET_ERROR)
        exit(1);
    gethostname(name, MAX_HOSTNAME_LAN);
    pHostent = gethostbyname(name);
    sa.sin_family = AF_INET;
    sa.sin_port = htons(6000);
    memcpy(&sa.sin_addr.S_un.S_addr, pHostent->h_addr_list[0], pHostent->h_length);
    bind(sock, (SOCKADDR *)&sa, sizeof(sa));                /*bind()设定自己主机的IP地址和端口号*/
    if ((WSAGetLastError())==10013)
        exit(1);
    WSAIoctl(sock, SIO_RCVALL, &optval, sizeof(optval), NULL, 0, &dwBytesRet, NULL, NULL);
    pIpheader = (struct ipheader *)RecvBuf;
    pTcpheader = (struct tcpheader *)(RecvBuf+ sizeof(struct ipheader ));
    pUdpheader = (struct udphdr *) (RecvBuf+ sizeof(struct ipheader ));
   
    while (1){
        memset(RecvBuf, 0, sizeof(RecvBuf));
        recv(sock, RecvBuf, sizeof(RecvBuf), 0);
        saSource.sin_addr.s_addr = pIpheader->ip_src;
        strncpy(szSourceIP, inet_ntoa(saSource.sin_addr), MAX_ADDR_LEN);
        saDest.sin_addr.s_addr = pIpheader->ip_dst;
        strncpy(szDestIP, inet_ntoa(saDest.sin_addr), MAX_ADDR_LEN);
        lentcp =(ntohs(pIpheader->ip_len)-(sizeof(struct ipheader)+sizeof(struct tcpheader)));
        lenudp =(ntohs(pIpheader->ip_len)-(sizeof(struct ipheader)+sizeof(struct udphdr)));
        
        if((pIpheader->ip_p)==IPPROTO_TCP&&lentcp!=0){
            printf("*******************************************\n");
            pCount++;
            datatcp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct tcpheader);
            printf("-TCP-\n");
            printf("\n目的IP地址:%s\n",szDestIP);
            printf("\n目的端口:%i\n",ntohs(pTcpheader->dport));
            printf("datatcp address->%x\n",datatcp);
            printf("size of ipheader->%i\n",sizeof(struct ipheader));
            printf("size of tcpheader->%i\n",sizeof(struct tcpheader));
            printf("size of the hole packet->%i\n",ntohs(pIpheader->ip_len));
            printf("\nchar Packet%i [%i]=\"",pCount,lentcp-1);
            
            for (i=0;i<lentcp;i++){
                printf("\\x%.2x",*(datatcp+i));
                if (i%10==0)
                    printf("\"\n\"");
            }
            printf("\";\n\n\n");
            
            for (i=0;i<lentcp;i++){
                if( *(datatcp+i)<=127&&*(datatcp+i)>=20)
                    printf("%c",*(datatcp+i));
                else
                    printf(".");
            }
            printf("\n\n*******************************************\n");
        }
        
        if((pIpheader->ip_p)==IPPROTO_UDP&&lentcp!=0){
            pCount++;
            dataudp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct udphdr);
            printf("-UDP-\n");
            printf("\n目的IP地址:%s\n",szDestIP);
            printf("\n目的端口:%d\n",ntohs(pTcpheader->dport));
            printf("UDP数据地址:%x\n",dataudp);
            printf("IP头部长度:%i\n",sizeof(struct ipheader));
            printf("UDP头部长度:%i\n",sizeof(struct udphdr));
            printf("包的大小:%i\n",ntohs(pIpheader->ip_len));
            printf("\nchar Packet%i [%i]=\"",pCount,lenudp-1);
            for (i=0;i<lenudp;i++){
                printf("\\x%.2x",*(dataudp+i));
                if (i%10==0)
                    printf("\"\n\"");
            }
            printf("\";\n\n\n");
            for (i=0;i<lenudp;i++){
                if( *(dataudp+i)<=127&&*(dataudp+i)>=20)
                    printf("%c",*(dataudp+i));
                else
                    printf(".");
            }
            printf("\n\n*******************************************\n");
        }
    }
}


[ 本帖最后由 C学徒 于 2012-6-15 17:29 编辑 ]
搜索更多相关主题的帖子: comment include 源代码 
2012-06-15 17:14
zxwangyun
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system("pause")/getchar()

努力改变一点点!!
2012-06-15 17:16
C学徒
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得分:0 
回复 2楼 zxwangyun
额 能不能带几句文字啊,好吧,你看看在这后面怎么加,这之后最后一段,之前还有,若是只这一段不行的话我把整个都发上来
 if((pIpheader->ip_p)==IPPROTO_UDP&&lentcp!=0){
            pCount++;
            dataudp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct udphdr);
            printf("-UDP-\n");
            printf("\n目的IP地址:%s\n",szDestIP);
            printf("\n目的端口:%d\n",ntohs(pTcpheader->dport));
            printf("UDP数据地址:%x\n",dataudp);
            printf("IP头部长度:%i\n",sizeof(struct ipheader));
            printf("UDP头部长度:%i\n",sizeof(struct udphdr));
            printf("包的大小:%i\n",ntohs(pIpheader->ip_len));
            printf("\nchar Packet%i [%i]=\"",pCount,lenudp-1);
            for (i=0;i<lenudp;i++){
                printf("\\x%.2x",*(dataudp+i));
                if (i%10==0)
                    printf("\"\n\"");
            }
            printf("\";\n\n\n");
            for (i=0;i<lenudp;i++){
                if( *(dataudp+i)<=127&&*(dataudp+i)>=20)
                    printf("%c",*(dataudp+i));
                else
                    printf(".");
            }
            printf("\n\n*******************************************\n");
2012-06-15 17:23
快速回复:c++ 编程 怎么编写“程序运行后,按任意键结束再按就继续”
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