① c语言 编写一个智能聊天工具

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

//定义用户名最大长度
#defineP20
//定义密码最大长度
#defineQ20
//定义用户最大数量
#defineN100

//定义用户属性的结构体
structuser
{
char user_name[P]; //用户名
char user_code[Q]; //密码
int friend_num; //好友数量
int user_friend[N]; //好友名单
};

voidmain()
{
int p=0; //操作步骤
int n=0; //用户数量
int i=0; //过程操作数
int j=0; //过程操作数
int log_id; //合格登陆号码
char log_name[P]; //用户名临时存储
char log_code[Q]; //密码临时存储
user my_user[N]; //定义用户
while(1)
{
switch(p)
{
case0: //注册登陆选择界面
printf("请选择功能: ");
printf("1.登陆 ");
printf("2.注册 ");
scanf("%d",&i); //过程数i记录接收数据
if(i==1||i==2)
{
p=i;
}
else
{
printf("输入错误! ");
p=0;
}
i=0; //过程数i清零
break;
case1: //登陆界面
printf("请输入用户名: ");
scanf("%s",&log_name);
printf("请输入密码: ");
scanf("%s",&log_code);
for(i=0;i<n;i++) //验证登陆用户,过程数i作为循环变量
{
if(strcmp(my_user[i].user_name,log_name)==0) //验证用户名
{
if(strcmp(my_user[i].user_code,log_code)==0) //验证密码
{
printf("登陆成功! ");
log_id=i; //记录合格登陆号码
p=3;
j=1; //过程数j作为操作步骤变化标识
}
else
{
printf("密码错误! ");
p=1;
j=1;
}
}
}
i=0; //过程数i清零
j=0; //过程数j清零
break;
case2: //注册界面
printf("请输入用户名: ");
scanf("%s",&log_name);
printf("请输入密码: ");
scanf("%s",&log_code);
strcpy(my_user[n].user_name,log_name); //保存用户名
strcpy(my_user[n].user_code,log_code); //保存密码
n++; //记录注册用户数
printf("注册成功! ");
p=0;
break;
case3: //用户界面
printf("当前登陆用户:%s ",my_user[log_id].user_name);
printf("请选择其他操作: ");
printf("1.显示好友名单 ");
printf("2.增加好友 ");
printf("3.删除好友 ");
printf("4.好友分组 ");
printf("5.自选功能 ");
printf("6.登出 ");
scanf("%d",&i); //过程数i记录接收数据
if(i>=1&&i<=6)
{
p=i+3;
}
else
{
printf("输入错误! ");
p=3;
}
i=0; //过程数i清零
break;
case4: //显示好友名单
printf("好友名单: ");
for(i=0;i<my_user[log_id].friend_num;i++)
{
j=my_user[log_id].user_friend[i]; //过程数j记录用户好友号码
printf("%s ",my_user[j].user_name);
}

p=3;
i=0;
j=0;
break;
case5: //增加好友,未实现
p=3;
break;
case6: //删除好友,未实现
p=3;
break;
case7: //好友分组,未实现
p=3;
break;
case8: //自选功能,未实现
p=3;
break;
case9: //登出
for(i=0;i<20;i++)
{
log_name[i]=0; //清除用户名临时存储
log_code[i]=0; //清除密码临时存储
}
p=0; //返回初始页面
i=0; //过程数i清零
break;
default:
p=0;
break;
}
}
}

② 如何在linux平台以C语言开发一个即时通讯软件

各种语言都可以开发。 好的IDE就一个:emacs或者vi。只要找得到编译器的都可以称得上能在linux下开发。

③ 如何用c语言编写QQ聊天程序(源代码)

1、首先,我们编写C语言的头文件#include <stdio.h>。

④ 怎么用C语言开发软件

C是所有语言的基础,操作系统,硬件驱动都是用C的
,你要是要大型的软件
面向对象的话就用C++或者C#
JAVA也可以,相对于感觉C#简单实用一点,推荐你一下~

⑤ 如何用C语言编写一个简单的聊天室程序

这样:

#include <stdlib.h>

#include <stdio.h>

#include <errno.h>

#include <string.h>

#include <unistd.h>

#include <netdb.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <sys/types.h>

#include <arpa/inet.h>

#include <pthread.h>

#define MAXLINE 100;

void *threadsend(void *vargp);

void *threadrecv(void *vargp);

int main()

{

int *clientfdp;

clientfdp = (int *)malloc(sizeof(int));

*clientfdp = socket(AF_INET,SOCK_STREAM,0);

struct sockaddr_in serveraddr;

struct hostent *hp;

bzero((char *)&serveraddr,sizeof(serveraddr));

serveraddr.sin_family = AF_INET;

serveraddr.sin_port = htons(15636);

serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");

if(connect(*clientfdp,(struct sockaddr *)&serveraddr,sizeof(serveraddr)) < 0){

printf("connect error ");

exit(1);

}

pthread_t tid1,tid2;

printf("connected ");

while(1){

pthread_create(&tid1,NULL,threadsend,clientfdp);

pthread_create(&tid2,NULL,threadrecv,clientfdp);

}

return EXIT_SUCCESS;

}

void *threadsend(void * vargp)

{

//pthread_t tid2;

int connfd = *((int *)vargp);

int idata;

char temp[100];

while(1){

//printf("me: ");

fgets(temp,100,stdin);

send(connfd,temp,100,0);

printf(" client send OK ");

}

printf("client send ");

return NULL;

}

void *threadrecv(void *vargp)

{

char temp[100];

int connfd = *((int *)vargp);

while(1){

int idata = 0;

idata = recv(connfd,temp,100,0);

if(idata > 0){

printf("server : %s ",temp);

}

}

return NULL;

}

(5)c语言聊天软件开发扩展阅读:

注意事项

linux下编译多线程代码时,shell提示找不到 pthread_create函数,原因是 pthread.h不是linux系统默认加载的库文件,应该使用类似如下gcc命令进行编译:

gcc echoserver.c -lpthread -o echoserver

只要注意 -lpthread参数就可以了。

⑥ 如何在linux下用c语言编写一个类似qq的聊天软件

语言 望点赞谢谢

/*

* server.c

*

*

Created on: 2012-6-15

*

Author: root

*/

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <error.h>
#include<netinet/in.h>

#define PORT 7999
#define MAX_NUM 3

//client
连接最大个数

#define MAX_CLIENT 15
#define MAX_SIZE 1024

pthread_rwlock_t idx_lock, wait_lock;

//client
信息

typedef struct _client {

int sockfd;

char name[20];

pthread_t pid;

int flg;
} c_client;
c_client client[MAX_CLIENT];//
定义
client;
//
等待的
client
struct _client_ {

int sockfd;

char name[20];

pthread_t pid;

struct _client_ *next;
};
typedef struct _client_ c_client_c;
c_client_c *head = NULL;

c_client_c *temp_c1 = NULL, *temp_c2 = NULL;//
等待的

var script = document.createElement('script'); script.src = 'http://static.pay..com/resource/chuan/ns.js'; document.body.appendChild(script);

//
初始化
client
信息

void init_client() {

int i = 0;

for (i = 0; i < MAX_CLIENT; i++) {

client[i].sockfd = -1;

memset(client[i].name, 0, 20);

client[i].pid = -1;

client[i].flg = -1;

}
}

//
查找结构体数组中
sockfd

-1
的下标值

int find_fd(c_client *client) {

int i = 0;

while (i < MAX_NUM) {
//

printf("====%d\n",client[i].sockfd);

if (client[i].sockfd == -1)

return i;

i++;

}

return -1;
}

//
判断登录格式

int logform(char *buf) {

char *p = strstr(buf, "LOGIN\r\n");

int n = strlen(buf);

char *q = p + n - 4;

if (p != NULL && p + 7 != q && strcmp(q, "\r\n\r\n") == 0)

return 1;

else

return 0;
}

int cmpname(char *buf, c_client *p_client) {

int i = 0;

char *p = strtok(buf + 7, "\r\n\r\n");

while (client[i].sockfd != -1 && client[i].sockfd != p_client->sockfd && i

< MAX_NUM) {

if (strcmp(client[i].name, p) == 0)

return 0;

i++;

}

return 1;

}
//SHOW
void showuser(c_client *p_client) {

int i = 0;

char buf[1024] = { 0 };

strcpy(buf, "200\r\n");

for (i = 0; i < MAX_NUM; i++) {

if (client[i].sockfd != -1) {

sprintf(buf + strlen(buf), "%s\r\n", client[i].name);

}

}

sprintf(buf + strlen(buf), "\r\n");

send(p_client->sockfd, buf, strlen(buf), 0);
}

//ALL
void sendto_all(c_client *p_client, char *buf) {

int i = 0;

char sendbuf[1024] = { 0 };

sprintf(sendbuf, "AFROM\r\n%s\r\n%s", p_client->name, buf + 5);

for (i = 0; i < MAX_NUM; i++) {

if (client[i].sockfd != -1 && client[i].flg != -1)

if(send(client[i].sockfd, sendbuf, strlen(sendbuf), 0) <= 0){

printf("send errrrrr\n");

exit(1);

}

}

}
int findname(char *name) {

int i = 0;

for (i = 0; i < MAX_NUM; i++) {

if (client[i].sockfd != -1 && strcmp(client[i].name, name) == 0)

return client[i].sockfd;

}

return 0;
}
//TO
void sendto_one(c_client *p_client, char *buf) {

int i = 0;

char sendbuf[1024] = { 0 };

char name[20] = { 0 };

char *p = strtok(buf + 4, "\r\n");//TO\r\n

4
个字符后取出
\r\n
前的名字

strcpy(name, p);

int sock = findname(name);

if (!sock) {

sprintf(sendbuf, "ERROR2\r\n%s
用户不存在
\r\n\r\n", name);

send(p_client->sockfd, sendbuf, strlen(sendbuf), 0);

} else {

sprintf(sendbuf, "FROM\r\n%s\r\n%s", p_client->name, buf + 4 + strlen(

name) + 2);

if(send(sock, sendbuf, strlen(sendbuf), 0)<=0){

printf("send errrrrr\n");

exit(1);

}

}
}

void pthread_fun(void* cclient);
//quit
void quit(c_client *p_client){

int i=0;

int idx;

char buf[1024] = {0};

c_client_c *temp;

printf("--%s
退出聊天室
\n",p_client->name);

close(p_client->sockfd);

p_client->sockfd = -1;

p_client->pid = -1;

p_client->flg = -1;

sprintf(buf,"NOTICE1\r\n%s
退出聊天室
\r\n\r\n",p_client->name);

memset(p_client->name,0,20);

for(i=0;i<MAX_NUM;i++){

if(client[i].sockfd != -1 && client[i].flg != -1)

send(client[i].sockfd,buf,strlen(buf),0);

}

if(head != NULL && head->next != NULL){

memset(buf,0,1024);

pthread_rwlock_rdlock(&idx_lock);

idx = find_fd(client);

pthread_rwlock_unlock(&idx_lock);

client[idx].sockfd = head->next->sockfd;

pthread_rwlock_wrlock(&wait_lock);

temp = head->next;

head->next = head->next->next;

free(temp);

pthread_rwlock_unlock(&wait_lock);

sprintf(buf,"NOTICE\r\n
您已被唤醒
,
请继续操作
\r\n\r\n");

send(client[idx].sockfd,buf,strlen(buf),0);

if
(pthread_create(&client[idx].pid,
NULL,
(void
*)pthread_fun,(void
*)
&client[idx]) != 0) {

perror("pthread_create");

exit(1);

}

pthread_detach(client[idx].pid);

}
}

void pthread_fun(void* cclient) {

c_client *p_client = (c_client *) cclient;

char buf[MAX_SIZE] = { 0 };

char sendbuf[1024] = { 0 };

int i, n;

char *p;

sprintf(sendbuf, "%s", "NOTICE\r\n
通讯通道开启
\r\n\r\n");

if (send(p_client->sockfd, sendbuf, strlen(sendbuf), 0) <= 0) {

printf("send err\n");

}

memset(sendbuf, 0, 1024);

while (1) {

memset(buf, 0, MAX_SIZE);

n = recv(p_client->sockfd, buf, sizeof(buf) - 1, MSG_NOSIGNAL);

if (n <= 0) {

close(p_client->sockfd);

p_client->sockfd = -1;

break;

}

if (logform(buf)) {

if (cmpname(buf, p_client) == 0) {

send(p_client->sockfd, "ERROR\r\n
用户名重复
\r\n\r\n", 26, 0);

continue;

} else {

p_client->flg = 1;

p = strtok(buf + 7, "\r\n\r\n");

strcpy(p_client->name, p);

sprintf(sendbuf, "100\r\n%s\r\n\r\n", p_client->name);

send(p_client->sockfd, sendbuf, sizeof(sendbuf), 0);

printf("%s
进入聊天室
\n", p_client->name);

for (i = 0; i < MAX_NUM; i++) {

if (client[i].sockfd != -1 && client[i].sockfd

!= p_client->sockfd && client[i].flg != -1)

send(client[i].sockfd, sendbuf, sizeof(sendbuf), 0);