struct struct_name 
  {
     List of fields
     .
     .
     .
  };

strcut product
  {
    int code;
    char name[10], department[10];
    float price;
  };

void main()
  {
    struct product product1, product2, product3;
    .
    .
    .
  }

product3.price = 12.5;

product1 = product3;

struct product prod[10];

prod[0].code = 4;

strcut student
  {
    int id;                       // Serial number
    char f_name[10], l_name[10];  // First name and last name
    int birth;                    //  Birth year
    int grades[5];                //  5 grades of student
  };

struct student s1,s2;

struct student *s_ptr = &s1;

s1.birth = 1975;

(*s_ptr).birth = 1975;

s_ptr->birth = 1975;

s2 = func(s1);

struct student func(struct student s);

void func(struct student *s);

void input(struct student *s)
  {
    int i;
    printf("Enter student ID : ");
    scanf("%d", &s->id);
    printf("Enter student first name : ");
    gets(s->f_name);
    printf("Enter student last name : ");
    gets(s->l_name);
    for (i=0; i<5; i++)
      {
        printf("Enter grade number %d : ", i+1);
        scanf("%d", &s->grades[i]);
      } 
  }


void output(struct student *s)
  {
    int i;
    printf("Student ID : %d\n", s->id);
    printf("First name : %s\n", s->f_name);
    printf("Last name : %s\n", s->l_name);
    printf("Grades: "); 
    for (i=0; i<5; i++)
      printf("%d ", s->grades[i]);
    printf("\n");
  }


void main()
  {
    struct student s;
    input(&s);
    output(&s);
  }