Listing the files and subdirectories in C - Linux
// program lists the files and subdirectories within a given directory in full path
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <dirent.h> char *path_cat (const char *str1, char *str2); int main () { struct dirent *dp; // enter existing path to directory below const char *dir_path="/path/to/directory/to/list"; DIR *dir = opendir(dir_path); while ((dp=readdir(dir)) != NULL) { char *tmp; tmp = path_cat(dir_path, dp->d_name); printf("%s\n", tmp); free(tmp); tmp=NULL; } closedir(dir); return 0; } char *path_cat (const char *str1, char *str2) { size_t str1_len = strlen(str1); size_t str2_len = strlen(str2); char *result; result = malloc((str1_len+str2_len+1)*sizeof *result); strcpy (result,str1); int i,j; for(i=str1_len, j=0; ((i<(str1_len+str2_len)) && (j<str2_len));i++, j++) { result[i]=str2[j]; } result[str1_len+str2_len]='\0'; return result; }
