Mine

#include <stdio.h>
#include <string.h>
extern char **environ;

int main(void)
//int main(int argc, char *argv[])
{
   int i, j = 0;
   for (i = 0; environ[i] != NULL; i++) {
      //printf("%s\n",environ[i]);
      j = j + strlen(environ[i]);
   }
   printf("strings: %i - chars: %i\n", i, j);
   return 0;
}