while (timer < config->values[MY_NUMBER]){ /* code*/}

typedef struct Config {
float MY_FLOAT;
unsigned int values[TOTAL_PARAMS];
} Config;

int main(int argc, char **argv) {

  Config *config = load_config();

  int timer = 0;
  int finish_time = config->values[FIN_TIME];

  int rand_min_max[2] = {config->values[MIN],config->values[MAX]};

   /*... code*/

  while (timer < finish_time) {
    randomizer_func(rand_min_max);
    /* Code*/
  }
}