構造体もけっこう意外だったりして

#include 
struct person {

  unsigned short age;

  char *name;

} ichiro = {23, "SUZUKI Ichiro"};
struct person2 {

  unsigned short age;

  char name[20];

} jiro = {20, "SUZUKI Jiro"};
main()

{
  printf("sizeof(ichiro) = %d\n", sizeof(ichiro));

  printf("sizeof(ichiro.age) = %d\n", sizeof(ichiro.age));

  printf("sizeof(ichiro.name) = %d\n", sizeof(ichiro.name));

  printf("&ichiro = %x, ichiro = %x\n", &ichiro, ichiro);

  printf("&ichiro.age = %x, &ichiro.name = %x\n", &ichiro.age, &ichiro.name);
  printf("sizeof(jiro) = %d\n", sizeof(jiro));

  printf("sizeof(jiro.age) = %d\n", sizeof(jiro.age));

  printf("sizeof(jiro.name) = %d\n", sizeof(jiro.name));

  printf("&jiro = %x, jiro = %x\n", &jiro, jiro);

  printf("jiro = %x, &jiro = %x\n", jiro, &jiro); // ちょっと難しい

  printf("&jiro.age = %x, &jiro.name = %x\n", &jiro.age, &jiro.name);
}