include [HTML_REMOVED]

include [HTML_REMOVED]

include [HTML_REMOVED]

include [HTML_REMOVED]

define MAXLINE 20 //管道容纳字节数

int main(int argc, char* argv[]){
int n;
int com[2]; //command管道
int res[2]; //response管道
pid_t pid;
int in=atoi(argv[1]); //命令行输入整数

if(pipe(com)<0 || pipe(res)<0)
    printf("pipe error");
if((pid=fork())<0)
    printf("fork error");
if(pid>0){     //父进程为Client
    close(com[0]);  //关闭com的读端口
    close(res[1]);  //关闭res的写端口
    for(int i=1;i<4;i++){
        write(com[1], &in, sizeof(int)); //把输入送给Server
        read(res[0], &in, sizeof(int)); //等待Server处理完毕返回结果
        in = in * in;
    }
    printf("result is %i\n", in);
    kill(pid, SIGKILL);   //终止子进程，即Server进程
    waitpid(pid, NULL, 0);         //回收子进程
    exit(0);
}
else{     //子进程为Server
    close(com[1]);  //关闭com的写端口
    close(res[0]);  //关闭res的读端口
    int out;
    while(1){
        read(com[0],&out,sizeof(int));   //Server从com读出输入
        out=out*out;   //进行平方运算
        write(res[1],&out,sizeof(int));  //将结果写入res
    }
}
return 0;

}

CC=gcc
CFLAGS=-Wall

all: client_server

client_server: client_server.c
$(CC)$(CFLAGS) -o client_server client_server.c

clean:
rm -f client_server