Write a program that defines a:

• date type
• function that prints a date
• function that creates and returns the date after one year

Write a main function to test your functions.

#include <stdio.h>

typedef struct {
  int day;
  int month;
  int year;
} date;


void display_date(date d) 
{
  printf("%d/%d/%d\n", d.day, d.month, d.year);
}

date next_year(date d)
{
  date r;
  r.day = d.day;
  r.month = d.month;
  r.year = d.year+1;
  return r;
}

void main(void) {
  date d1 = { 12, 1, 2020 };   /* 12 january 2020 */
  date d2;
  display_date(d1);
  d2 = next_year(d1);
  display_date(d2);
}