模拟聊天程序//求高人修改！

C/C++ code

//服务器程序#include <stdio.h>#include <sys/socket.h>#include <stdlib.h>#include <netinet/in.h>#include <arpa/inet.h>#include <string.h>#include <pthread.h>#include <time.h>#include <semaphore.h>int fds[100];//保存所有的客户端的socket描述符,最大100int size=0;sem_t lock;void sendtoall(const char* msg,int rcvfd)//向所有人发送信息函数{        int i;        sem_wait(&lock);        for(i=0; i<size; i++)        {          if(fds[i]!=rcvfd)             send(fds[i], msg, strlen(msg), MSG_NOSIGNAL);        }     sem_wait(&lock);}void* task(void* p)//子进程函数{        int sd = *(int*)p;        char buf[100] = {};        while(1)                  {                memset(buf, 0, sizeof(buf));                recv(sd, buf, sizeof(buf), 0);                sem_wait(&lock);                sendtoall(buf,sd);//发送给所有在fds数组内的客户端                sem_post(&lock);                  }}int main(){        sem_init(&lock,0,1);//初始化锁变量        int sockfd = socket(PF_INET, SOCK_STREAM, 0);//获取sockfd,        if(sockfd==-1)perror("创建socket失败"),exit(-1);   struct sockaddr_in addr;//建立网络信息        addr.sin_family = PF_INET;        addr.sin_port = htons(8888);        addr.sin_addr.s_addr = inet_addr("172.18.7.72");   int res = bind(sockfd, (struct sockaddr*)&addr, sizeof(addr));//绑定        if(res==-1)perror("绑定失败"),exit(-1);        printf("绑定成功\n");   listen(sockfd, 10);//监听        struct sockaddr_in fromaddr={};        socklen_t len;        int sd,sd_temp;//每次while(1)循环,sd的值，会不断改变，故保存在sd_temp变量中        while(1)               {                sd = accept(sockfd, (struct sockaddr*)&fromaddr,&len);//与客户端建立联系                if(sd==-1)               {                        perror("等待客户端连接失败");                        continue;                }                fds[size++] = sd;//客户端socket ++            pthread_t tid;//建立子进程                sd_temp = sd;                pthread_create(&tid, 0, task, &sd_temp);               }     sem_destroy(&lock);｝

C/C++ code

//客户端#include <stdio.h>#include <sys/socket.h>#include <stdlib.h>#include <netinet/in.h>#include <arpa/inet.h>#include <string.h>#include <pthread.h>void* task(void* p)//子进程函数{        int sd = *(int*)p;        char buf[100] = {};        while(1)       {                memset(buf, 0, sizeof(buf));                recv(sd, buf, sizeof(buf), 0);                printf("%s\n", buf);        }}int main(){        int sockfd = socket(PF_INET, SOCK_STREAM, 0);//创建socket        if(sockfd==-1)perror("创建socket失败"),exit(-1);        struct sockaddr_in addr;//建立通信地址        addr.sin_family = PF_INET;        addr.sin_port = htons(8888);        addr.sin_addr.s_addr = inet_addr("172.18.7.72");        int res = connect(sockfd, (struct sockaddr*)&addr, sizeof(addr));//连接服务器        if(res==-1)perror("连接失败"),exit(-1);        printf("连接成功\n");        pthread_t tid;//建立子进程        pthread_create(&tid, 0, task, &sockfd);        printf("请输入你的姓名:");//本机参与聊天代码        char name[20] = {};        scanf("%s", name);        while(1)        {                scanf("%*c");           char buf[100] = {};                printf("输入内容:");                scanf("%s", buf);                char msg[120] = {};                strcpy(msg, name);                strcat(msg, ":");                strcat(msg, buf);                send(sockfd, msg, strlen(msg), MSG_NOSIGNAL);//发送信息        }}

我也在写聊天程序