printf - C: how to print a list in reverse order? -

i trying print list of tree_nodes in reverse order:

current prompt example: /hellofellow/hello/root / >

desired result: root/hello/hellofellow / >

what way efficiently?

// *prints prompt (e.g. /bar/baz/ >) in every iteration of main loop // *show directories on path in correct order void show_prompt(struct tree_node *cwd) {     struct tree_node *pardir = cwd->parent;     struct tree_node *originaldir = cwd;      while (cwd->parent != null) {         printf("/");         printf("%s", cwd->parent->string_buffer);         cwd = cwd->parent;     }     cwd = originaldir;     printf("/ >"); } 

you use recursion:

void print_path( struct tree_node * cwd ) {     if ( cwd->parent != null )         print_path( cwd->parent );     printf( "%s/", cwd->string_buffer ); }