linux c语言 写入文件

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

int main() {
    int file_descriptor;
    const char *file_path = "example.txt";
    const char *content = "Hello, World!\n";

    // 打开文件，如果不存在则创建，权限设置为644
    file_descriptor = open(file_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
    if (file_descriptor == -1) {
        perror("Error opening file");
        return EXIT_FAILURE;
    }

    // 写入内容到文件
    ssize_t bytes_written = write(file_descriptor, content, strlen(content));
    if (bytes_written == -1) {
        perror("Error writing to file");
        close(file_descriptor);
        return EXIT_FAILURE;
    }

    // 关闭文件
    close(file_descriptor);

    return EXIT_SUCCESS;
}