如何用C语言创建未知名称的目录

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

void generateRandomName(char* name) {
    const char charset[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    const int nameLength = 10;
    int i;

    for (i = 0; i < nameLength; i++) {
        int index = rand() % (sizeof(charset) - 1);
        name[i] = charset[index];
    }

    name[nameLength] = '\0';
}

int main() {
    char dirname[11];
    generateRandomName(dirname);

    if (mkdir(dirname, 0777) == 0) {
        printf("目录创建成功：%s\n", dirname);
    } else {
        printf("目录创建失败\n");
    }

    return 0;
}