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PORecursively list directories in C
 

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    <p>im looking for a code who will recursively list all directories and files of a directory given on argument in C programming, ive find an interresting code (below) but I dont understand the snprintf function and particulary the "/", I would prefer to use strcat or other system function to override the sprintf function but I dont see how since I dont understand what the snprintf do here. Heres the code:</p> <pre><code>int is_directory_we_want_to_list(const char *parent, char *name) { struct stat st_buf; if (!strcmp(".", name) || !strcmp("..", name)) return 0; char *path = alloca(strlen(name) + strlen(parent) + 2); sprintf(path, "%s/%s", parent, name); stat(path, &amp;st_buf); return S_ISDIR(st_buf.st_mode); } int list(const char *name) { DIR *dir = opendir(name); struct dirent *ent; while (ent = readdir(dir)) { char *entry_name = ent-&gt;d_name; printf("%s\n", entry_name); if (is_directory_we_want_to_list(name, entry_name)) { // You can consider using alloca instead. char *next = malloc(strlen(name) + strlen(entry_name) + 2); sprintf(next, "%s/%s", name, entry_name); list(next); free(next); } } closedir(dir); } </code></pre> <p>from <a href="https://stackoverflow.com/questions/8436841/how-to-recursively-list-directories-in-c-on-linux">How to recursively list directories in C on LINUX</a></p> <p>Okay, my program is running but now i want to save all the file and directory printed to a file like i run my program ./a.out . > buffer where buffer contain what the program should print on the shell </p>
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    1. USSaxtheowl
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    1. COuh... what snprintf call? There's none in the code snippet. If you don't understand what it does, why don't you LOOK UP what it does? http://www.cplusplus.com/reference/cstdio/snprintf/
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      1. USMarc B
    2. COwhat is your problem with sprintf exactly? it's just concatenating 3 strings - name, "/" and entry_name.
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      1. USTom Tanner
    3. COi think sprintf is creating all problem
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      1. PORecursively list directories in C
      1. USTushar Gupta
 

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