获取固定路径下文件名

现在有一个确定的路径下只放了一个文件,我知道这个文件的路径但是这个路径下的文件名一直在变化,我要如何获取到这个文件的名字呢


#include <iostream>
#include <dirent.h>

int main() {
    DIR *dir;
    struct dirent *ent;
    const char *path = "/home/user/files/";

    if ((dir = opendir(path)) != nullptr) {
        while ((ent = readdir(dir)) != nullptr) {
            if (ent->d_type == DT_REG) {  // DT_REG表示是常规文件
                std::cout << "File name: " << ent->d_name << std::endl;
            }
        }
        closedir(dir);
    } else {
        std::cerr << "Failed to open directory: " << path << std::endl;
    }

    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __WIN64
#include <windows.h>
#endif

void getFileInf(const char *command)
{
    char comLs[128] = "ls ";
    strcat(comLs, command);

    // 获取windows命令回执
    FILE *winCommand = popen(comLs, "r");
    static char buf[256] = {};

    if (!winCommand)
    {
        perror("popen");
        exit(EXIT_FAILURE);
    }
    else
    {
        // 输出命令回执
        while (fgets(buf, sizeof(buf) - 1, winCommand) != 0)
        {
            printf("%s", buf);
            memset(buf, 0, sizeof(buf));
        }

        pclose(winCommand);
    }
}

int main()
{
#ifdef __WIN64
    SetConsoleOutputCP(65001);
#endif

    getFileInf("E:\\C++");
    return 0;
}