#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
   const char* path = getenv("PATH");
   char* mypath = strdup(path);
   char* lasts;
   char* dir = strtok_r(mypath, ":", &lasts);
   while (dir) {
      puts(dir);
      dir = strtok_r(0, ":", &lasts);
   }
   free(mypath);
}