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

typedef struct {
  char *name;
  char *sex;
  int   age;
  char *job;
  char *mail;
} profile;

static void initProfile(profile *sp);
static void setProfile(profile *sp);
static void disposeProfile(profile *sp);
static void showProfile(profile *sp);
static int  getAge(int birthday);

static const size_t Maxbuf = 64;

int main(void)
{
  profile *entity;
  entity = malloc(sizeof(profile));

  initProfile(entity);
  setProfile(entity);

  showProfile(entity);

  disposeProfile(entity);
  free(entity);

  return 0;
}

static void initProfile(profile *sp)
{
  sp->name = malloc(Maxbuf + 1);
  sp->sex  = malloc(Maxbuf + 1);
  sp->job  = malloc(Maxbuf + 1);
  sp->mail = malloc(Maxbuf + 1);
}

static void setProfile(profile *sp)
{
  snprintf(sp->name, Maxbuf, "%s %s", "HASE", "Kazuaki");
  snprintf(sp->sex,  Maxbuf, "%s",    "Male");
  snprintf(sp->job,  Maxbuf, "%s",    "Conposer");
  snprintf(sp->mail, Maxbuf, "%s@%s", "hase", "psipsina.jp");
  sp->age  = getAge(19860313);
}

static void disposeProfile(profile *sp)
{
  free(sp->name);
  free(sp->sex);
  free(sp->job);
  free(sp->mail);
}

static void showProfile(profile *sp)
{
  printf("Name: %s\n", sp->name);
  printf("Sex : %s\n", sp->sex);
  printf("Age : %d\n", sp->age);
  printf("Job : %s\n", sp->job);
  printf("Mail: %s\n", sp->mail);
}

static int getAge(int birthday)
{
  time_t t = time(NULL);
  struct tm *local = localtime(&t);

  const int thisYear = local->tm_year + 1900;
  const int thisDays = (local->tm_mon + 1) * 100 + local->tm_mday;

  const int birthYear = birthday / 10000;
  const int birthDays = birthday % 10000;

  int age = thisYear - birthYear;

  return ((thisDays >= birthDays) ? age : --age);
}