Mine

#include <stdio.h>#include <stdlib.h>#include <locale.h>int main(){  char* args[] =  {    "2.5",    "0.5",    ".5",    "2,5",    "0,5",    ",5",    NULL  };  char** p = args;  double d;  setlocale(LC_ALL, "de_DE@euro");  while (*p)  {    sscanf(*p, "%lf", &d);    printf ("%s = %lf %lf %lf\n", *p, atof(*p), strtod(*p, NULL), d);    p++;  }  return 0;}