将多个文件夹中的图像复制到一个文件夹

Question

我有一个文件夹，其中有多个文件夹，每个文件夹包含许多照片，例如，我有一个文件夹2018，文件夹2018包含11个更多文件夹，所有这11个文件夹包含一定数量的图像，所有图像都具有相同的格式.jpg。我想将来自不同文件夹的所有图像复制到一个文件夹中。

我尝试过以下代码：

#include<stdio.h>
#include<stdio.h>
#include<dirent.h>
#include<errno.h>
#include<sys/types.h>
#include<sys/stat.h>
#define MAX 1024

int main()
{
    char    arSrcPath[]    = "/home/mpe4/Src";    /*Source directory path*/
    char    arDestPath[]    = "/home/mpe4/Dest";    /*dest directory path*/
    struct    dirent* spnDirPtr;    /* struct dirent to store all files*/

    DIR* pnOpenDir = NULL;    /*DIR Pointer to open Dir*/
    DIR* pnReadDir = NULL;    /*DIR POinter to read directory*/

    pnOpenDir = opendir(arSrcPath); 

    if(!pnOpenDir)
    printf("\n ERROR! Directory can not be open");

    else
    {    
    int nErrNo = 0;
    while(spnDirPtr = readdir(pnOpenDir))
    {
        if(nErrNo == 0)
        nErrNo = errno;
        printf("\n Now writing %s file...",spnDirPtr->d_name);

        printf("\n dest file name = %s/%s\n", arDestPath, spnDirPtr->d_name);

        struct stat st_buf;
        stat(spnDirPtr->d_name, &st_buf);
        if (S_ISDIR (st_buf.st_mode))
        {
            continue;
        }
        else if (S_ISREG (st_buf.st_mode))
        {
            FILE* pnReadFile = fopen(spnDirPtr->d_name,"r");

            if(pnReadFile)
            {
                printf("\n Now reading %s file...",spnDirPtr->d_name);

                char strDestFileName[MAX] = {0};
                sprintf(strDestFileName, "%s/%s", arDestPath, spnDirPtr->d_name);
                printf("\n dest file name = %s\n", strDestFileName);

                FILE* pnWriteFile  = fopen(strDestFileName, "w");    /*File Pointer to write in file*/
                if(pnWriteFile)
                {
                    char buffer[MAX] = {0};    /*Buffer to store files content*/

                        while(fgets(buffer, MAX, pnReadFile))
                        {
                            fputs(buffer, pnWriteFile);
                        }
                    fclose(pnWriteFile);
                }
            else
            {
                printf("\n Unable to open file %s", strDestFileName);
            }
            fclose(pnReadFile);
    }
    else
    {
        printf ("\nERROR! File Could not be open for reading");
    }
    }
    }
    if(nErrNo != errno)
        printf ("\nERROR Occurred!\n");
    else
        printf ("\nProcess Completed\n");

    }
    closedir(pnOpenDir);
    return 0;
}  

但是这段代码只是复制文件而不是文件中的数据。