c语言创建一个文件夹以及修改图片的名字

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <mmsystem.h>
#pragma comment(lib,"winmm.lib")
#include "conio.h"
//#include "dir.h"
#include "shlwapi.h"
#pragma comment(lib,"shlwapi.lib")
#include <io.h> //finddata
#include <string.h>//字符串操作
#define MAX 128
typedef struct music {
    int num;
    char* name;
    struct music* next;
}musicNode,*linkMusic;
linkMusic ini(char* name) {
    linkMusic p = (linkMusic)malloc(sizeof(musicNode));
    p->name = name;
    printf("%p,%p\n", name, p->name);
    printf("%s,%s\n", name, p->name);
    printf("%x,%x\n", *name, *p->name);
    return p;
}
int main()
{
    //char str[] = "hellow world";
    //char* p = str;
    //*p ='m';
    //p++;
    //*p = 'i';
    //printf("%s\n", str);
    ////str[] = "ni";
    //p = "mike jiang";
    //printf("%s\n", p);

    //char* q = "test";
    //printf("%s\n", q);
    //char s1[] = "你好";
    //char s2[] = "你好a ";
    //linkMusic p = ini("你好");
    ////linkMusic p = ini(s1);
    //printf("%s\n", p->name);
    //linkMusic p1 = ini("你好啊");
    ////linkMusic p1 = ini(s2);
    //printf("%s\n", p1->name);
    /*
    ********在某一个文件夹下面创建新的文件夹**************
    system("mkdir C:\\music\\我的123");
    char path[200]="mkdir C:\\music\\";
    char final[200];
    char tem[20] = "0";
    for (int i = 1; i < 32; i++)
    {
        if (i<10)
        {
            tem[1] = char(i+'0');
            sprintf(final, "%s第%s组答辩照片", path, tem);
        }
        else
        {
            sprintf(final, "%s第%d组答辩照片", path, i);
        }
        
        system(final);
    }*/

    char test[100] = "21620102144801.JPG";
    int num = strlen(test);//获取字符串长度
    int i = 0;
    for (int j = 0; j < num; j++)
    {
        if (test[j] != '.') {
            i++;
        }
        else
        {
            break;
        }

    }
    printf("长度是：%d\n", i);
    //文件地址（修改这里就可以了）
    char ADDR[100] = "C:\\Users\\cg123\\Desktop\\0818四川普通文理平行1征\\0818四川普通文理平行1征\\照片\\";
    //修改成的文件类型
    char type[10] = ".jpg";
    //char SreachAddr[200] = "C:\\Users\\cg123\\Desktop\\0818省外（除云南）\\0818省外（除云南）\\照片\\*.*";
    char searchAddr[200] = "";
    sprintf(searchAddr,"%s%s", ADDR, "*.*");
    char newP[100] = "";
    char oldP[100] = "";
    char temp[100] = "";
    intptr_t Handle;//卧槽，居然要用这个类型才会不报错
    struct _finddata_t FileInfo;
    Handle = _findfirst(searchAddr, &FileInfo);
    if (-1 == Handle)
        return -1;
    //index(FileInfo.name, '.');
    //printf("%s,%d\n", FileInfo.name, strchr(FileInfo.name, '.'));
    //printf("sss:%d\n", FileInfo.name, strchr(FileInfo.name, '.'));
    
    sprintf(oldP, "%s%s", ADDR, FileInfo.name);
    strncpy(temp, FileInfo.name, 14);
    strcat(temp, type);
    sprintf(newP, "%s%s", ADDR, temp);
    rename(oldP, newP);//用系统函数修改文件的名字
    while (!_findnext(Handle, &FileInfo))
    {
        memset(newP, 0, strlen(newP));//清空字符数组的所有内容
        memset(temp, 0, strlen(temp));
        memset(oldP, 0, strlen(oldP));
        printf("%s\n", FileInfo.name);
        sprintf(oldP, "%s%s", ADDR, FileInfo.name);
        strncpy(temp, FileInfo.name, 14);//将字符串前14个字符进行复制
        strcat(temp, type);//拼接后缀
        
        sprintf(newP, "%s%s", ADDR, temp);
        printf("旧：%s\n", oldP);
        printf("新：%s\n", newP);
        rename(oldP, newP);//去旧地址的位置找到文件，然后将名字改为新地址的名字，如果新旧地址不一样，则表现为移动文件的位置
        //printf("%s,%d\n", FileInfo.name, strchr(FileInfo.name, '.'));
        //strncpy(newP, FileInfo.name, 14);
        //printf("前缀：%s\n", newP);
        //rename("c:\\music\\1.mp3", "1ff.mp3");
    }
    _findclose(Handle);
    
    getchar();
    return 0;
}