如何使用readdir统计文件数量

#<span>include <stdio.h></span>
#<span>include <stdlib.h></span>
#<span>include <dirent.h></span>
#<span>include <sys/stat.h></span>

int main(<span>int argc, char *argv[])</span> {
    if (argc != 2) {
        printf("Usage: %s <directory_path>\n", argv[0]);
        return 1;
    }

    DIR *dir = opendir(argv[1]);
    if (dir == NULL) {
        perror("opendir");
        return 1;
    }

    <span>struct dirent *entry;</span>
    int file_count = 0;

    while ((entry = readdir(dir)) != NULL) {
        // 跳过当前目录（.）和上级目录（..）
        if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
            continue;
        }

        // 使用 stat 函数获取文件信息
        <span>struct stat file_stat;</span>
        if (stat(argv[1] "/" entry->d_name, &file_stat) == 0) {
            // 检查是否为文件
            if (S_ISREG(file_stat.st_mode)) {
                file_count++;
            }
        }
    }

    closedir(dir);

    printf("Number of files: %d\n", file_count);
    return 0;
}

gcc -o count_files count_files.c

./count_files /path/to/directory