[C Language] delete all files with user-defined extensions

Environment: win7

IDE: DEV-C ++

Compiler: GCC

Compilation result: Success

Running result: Success

 

Instructions for use:

1. Enter the directory to be queried, such as e:

2. Enter the suffix to be deleted, for example, txt.

 

Note: This program uses Remove to delete files, so the deleted files are not moved to the recycle bin.

 

 

Program: http://files.cnblogs.com/IAmBetter/DeleteEverything.rar

Source code:

# Include <stdio. h> # include <direct. h> // _ getcwd (), _ chdir () # include <stdlib. h> // _ MAX_PATH, system () # include <io. h> // _ finddata_t, _ findfirst (), _ findnext (), _ findclose () # include <string. h> # include <windows. h> // Delete total int count = 0; // obtain the current path void GetCurrentPath (void) {char buf [80]; getcwd (buf, sizeof (buf )); printf ("current working directory: % s \ n", buf);} // get the suffix char * substr (const char * str) {char * p Tr, c = '. '; static char stbuf [256]; ptr = strrchr (str, c); // if (ptr = NULL) {return stbuf ;} int pos = ptr-str; // Use Pointer subtraction to obtain the index unsigned start = pos + 1; unsigned end = strlen (str); unsigned n = end-start; strncpy (stbuf, str + start, n); stbuf [n] = 0; // Add 0 return stbuf;} // recursively query the file and delete void findAllFile (char * pFilePath, char * extName) {WIN32_FIND_DATA FindFileData; DWORD dwError; HANDL E hFind = INVALID_HANDLE_VALUE; char DirSpec [MAX_PATH + 1]; strncpy (DirSpec, pFilePath, strlen (pFilePath) + 1); SetCurrentDirectory (pFilePath); strncat (DirSpec, "\ *", 3); hFind = FindFirstFile (DirSpec, & FindFileData); if (hFind = INVALID_HANDLE_VALUE) {printf ("FileName: % s Invalid file handle. error is % u \ n ", pFilePath, GetLastError (); return;} else {if (FindFileData. dwFileAttributes! = FILE_ATTRIBUTE_DIRECTORY) {printf ("FileName: % s \ n", FindFileData. cFileName);} else if (FindFileData. dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY & strcmp (FindFileData. cFileName ,". ")! = 0 & strcmp (FindFileData. cFileName ,"..")! = 0) {char Dir [MAX_PATH + 1]; strcpy (Dir, pFilePath); strncat (Dir, "\", 2); strcat (Dir, FindFileData. cFileName); findAllFile (Dir, extName);} while (FindNextFile (hFind, & FindFileData )! = 0) {if (FindFileData. dwFileAttributes! = FILE_ATTRIBUTE_DIRECTORY) {_ chdir (pFilePath); char * extname2 = substr (FindFileData. cFileName); if (strcmp (extname2, extName) = 0) {printf ("\ nFileName: % s", FindFileData. cFileName); int result = remove (FindFileData. cFileName); if (result = 0) {printf ("Delete Result: % d", result); count ++ ;} else {perror ("remove") ;}} else if (FindFileData. dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY & strcmp (Fin DFileData. cFileName ,".")! = 0 & strcmp (FindFileData. cFileName ,"..")! = 0) {char Dir [MAX_PATH + 1]; strcpy (Dir, pFilePath); strncat (Dir, "\", 2); strcat (Dir, FindFileData. cFileName); findAllFile (Dir, extName) ;}} dwError = GetLastError (); FindClose (hFind); if (dwError! = ERROR_NO_MORE_FILES) {printf ("FindNextFile error. error is % u \ n ", dwError); return ;}}// start displaying part of void Show (char str []) {int I, len; len = strlen (str); for (I = 0; I <len; I ++) {printf ("% c", str [I]); sleep (100) ;}} int main (void) {printf ("Anleb:"); sleep (1000); char string1 [] = "I am Anleb, nice to somthing! \ N "; Show (string1); printf (" Anleb: "); sleep (1000); char string2 [] =" Go, gay! \ N "; Show (string2); printf (" Please Enter the Path: "); char path [128]; gets (path); while (strlen (path) = 0) {printf ("Warning: The Path value is Null! \ N "); printf (" Please Enter the Path: "); gets (path);} if (strcmp (path," exit ") = 0) return 0; printf ("Please Enter the ExtName:"); char extName [10]; gets (extName); while (strlen (extName) = 0) {printf ("Warning: the ExtName value is Null! \ N "); printf (" Please Enter the ExtName: "); gets (extName);} if (strcmp (extName," exit ") = 0) return 0; findAllFile (path, extName); printf ("\ nDelete Count: % d \ n", count); system ("pause"); return 0 ;}