我是菜鸟啊，写了个遍历目录的代码。
代码在有些目录中运行时会出错，有些目录一切正常，我把中间一段代码注释了运行全部正常，不知道是哪里出问题了，帮忙分析下。

#include<stdio.h>
#include<string.h>
#include<windows.h>
#include<stdlib.h>
#include<stdbool.h>
#include<locale.h>
bool flag = false;
char sentence[] = {0};
void XieWjj(char[], char[]);
int FindFiles(char[]);
int main(int argc,char const *argv[]) {
    char path[190]= {0};
    GetCurrentDirectory(150, path);
    //GetModuleFileName(NULL,path,190);
    //printf("%s\n", path);
    FindFiles(&path[0]);
    system("pause");
    return 0;
}

int FindFiles(char *strTemp) {
    WIN32_FIND_DATA p1;
    HANDLE h1;
    int k, j = 0;
    flag = false;
    char path2[150] = {0}, path3[150] = {0}, filename[150] = {0}, *name, *ch, name2[150] = {0}; //path2 完整的目录路径
    strcpy(path2, strTemp);
    strcpy(path3, strTemp);
    strcat(path3, "\\*.*");
    h1 = FindFirstFile(path3, &p1);
    if(h1 == INVALID_HANDLE_VALUE) {
        printf("%s\n","File no!");
        return 0;
    }
    do {
        if (p1.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
            //如果是目录  排除 .. 的无效目录
            if (p1.cFileName[0] != '.') {
                sprintf(path3,"%s%s%s",path2,"\\",p1.cFileName);
                FindFiles(&path3[0]);//递归
            }
        } else {
            if (strcmp(p1.cFileName, "") != 0) {
                sprintf(path3,"%s%s%s",path2,"\\",p1.cFileName);
                name = strrchr(p1.cFileName, '.');//查找最后一个出现的字符位置
                ch = name;
                //char *name = strchr(p,'.'); //查找最前一个出现的字符位置
                /*    if (strcmp(name, ".m3u8") == 0) {
                        if (flag == false) {
                            flag = true;
                            ch = strchr(p1.cFileName, '.');   //取目录名
                            k = strlen(p1.cFileName) - strlen(ch);
                            strncpy(name2, p1.cFileName, k);
                            printf("%s\n",name2);
                            sprintf(sentence,"%s%s%s","<?xml version=\"1.0\" encoding=\"UTF-8\"?><tvshow><title>",name2,"</title></tvshow>");
                            sprintf(filename,"%s%s%s",path2,"\\","tvshow.nfo");
                            //XieWjj(&filename[0], &sentence[0]);
                            memset(filename , 0, sizeof(filename));//清空数组
                            memset(sentence , 0, sizeof(sentence));//清空数组
                        }
                        k = strlen(p1.cFileName) - strlen(name);
                        strncpy(name2, p1.cFileName, k);
                        sprintf(filename,"%s%s%s%s",path2,"\\",name2,".nfo");
                        j++;
                        printf(".");
                        //printf("%s\n%s\n", p1.cFileName, na);
                        printf("%s\n%s\n", path3,filename);
                        strcpy(sentence, "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\" ?><episodedetails>");
                        //XieWjj(&filename[0], &sentence[0]);
                        memset(filename , 0, sizeof(filename));//清空数组
                        memset(name2, 0, sizeof(name2)); //清空数组
                    }*/
                printf("%s\n",path2);
                memset(path3, 0, sizeof(path3));//清空数组
            }
        }
    }while (FindNextFile(h1, &p1)) ;

}

void XieWjj(char *FileLoad, char *FileName) {
    /*    struct dirent *entry;
        FILE *fptr;
        fptr = fopen(FileLoad, "w+b");
        if(fptr == NULL) {
            printf("Error!");
        } else {
            //fgets(FileName, (sizeof FileName/sizeof FileName[0]), (FILE*)fptr);
            fprintf(fptr,"%s", FileName);
        }
        fclose(fptr);
    */

    DWORD dwWriteSize = 0;
    HANDLE hFile = CreateFile(FileLoad, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
                              FILE_ATTRIBUTE_NORMAL,NULL);
    if (hFile == INVALID_HANDLE_VALUE) {
        printf("CreateFile fail!\n");
    }
    //SetFilePointer(hFile,0,NULL,FILE_END);
    if(WriteFile(hFile,FileName,strlen(FileName),&dwWriteSize,NULL)) {
        //printf("WriteFile OK \n");
    }
    CloseHandle(hFile);


}

1、不同的目录文件名大小不同，是否用来存放文件名的空间不够大。
2、递归用栈区，要考虑目录层次的深度、文件的多少。

感谢版主的回答！问题我找到了是：
name = strrchr(p1.cFileName, '.');//查找最后一个出现的字符位置
这个name的值 （找不到会返回 NULL）,这是一个空的地址所以会出错
所以 if(name != NULL){  }