如何使用fprintf并写入管道？

#include<stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>

int main() {
    int pipefd[2];
    pid_t pid;
    char buffer[100];

    // 创建管道
    if (pipe(pipefd) == -1) {
        perror("pipe");
        exit(EXIT_FAILURE);
    }

    // 创建子进程
    pid = fork();

    if (pid == -1) {
        perror("fork");
        exit(EXIT_FAILURE);
    }

    if (pid == 0) {
        // 子进程关闭读端
        close(pipefd[0]);

        // 使用fprintf将文本写入管道
        FILE *pipe_write;
        pipe_write = fdopen(pipefd[1], "w");
        fprintf(pipe_write, "Hello, this is a message from child process.\n");
        fclose(pipe_write);
        exit(EXIT_SUCCESS);
    } else {
        // 父进程关闭写端
        close(pipefd[1]);

        // 从管道中读取数据
        FILE *pipe_read;
        pipe_read = fdopen(pipefd[0], "r");
        fgets(buffer, sizeof(buffer), pipe_read);
        fclose(pipe_read);

        // 输出读取到的数据
        printf("Message from child process: %s", buffer);
    }

    return 0;
}