c/c++ pipe fork管道 子进程

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#include<bits/stdc++.h>
#include<unistd.h>
#include <stdio.h>
#include <stdlib.h>
using namespace std;

#define MAXIMUM 1000
int main()
{
    int fd[2];
    pid_t pid;
    char line[MAXIMUM];
    if(pipe(fd) < 0){
        printf("Failure to create the pipe.n");
        exit(1);
    }
    if((pid == fork())< 0){
        printf("Failed to create the child process.n");
        close(fd[0]);
        close(fd[1]);
        exit(2);
    }
    if(pid > 0){
        close(fd[0]);
        write(fd[1], "How are you?n", 15);
        printf("Parent: Successfully!n");
        close(fd[1]);
        sleep(1);
    }
    else{
        close(fd[1]);
        read(fd[0], line, MAXIMUM);
        printf("Child: Read from the pipe:%s",line);
        close(fd[0]);
    }
    return 0;
}

/*
输出：
Parent: Successfully!
Child: Read from the pipe:How are you?
//代写接单qun：733065427
*/