Mega Code Archive
Basics of a family tree 2
<![CDATA[
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
struct Cat *getCat(void);
struct Date
{
int day;
int month;
int year;
};
struct Cat
{
struct Date dob;
char name[20];
char father[20];
char mother[20];
struct Cat *next;
struct Cat *previous;
};
int main()
{
struct Cat *first = NULL;
struct Cat *current = NULL;
struct Cat *last = NULL;
char more = '\0';
int i =0;
for(i =0;i<5 ;i++ )
{
current = getCat();
if(first == NULL){
first = current;
last = current;
}else {
last->next = current;
current->previous = last;
last = current;
}
}
while (current != NULL)
{
printf("\n%s was born %d/%d/%d, and has %s and %s as parents.",
current->name, current->dob.day, current->dob.month,
current->dob. year, current->father, current->mother );
last = current; /* Save pointer to enable memory to be freed */
current = current->previous; /* current points to previous list */
free(last);
}
}
struct Cat *getCat(void)
{
struct Cat *temp;
temp = (struct Cat*) malloc(sizeof(struct Cat));
printf("\nEnter the name of the person: ");
scanf("%s", temp -> name );
printf("\nEnter %s's date of birth (day month year); ", temp->name);
scanf("%d %d %d", &temp->dob.day, &temp->dob.month, &temp->dob.year);
printf("\nWho is %s's father? ", temp->name );
scanf("%s", temp->father );
printf("\nWho is %s's mother? ", temp -> name );
scanf("%s", temp -> mother );
temp->next = temp->previous = NULL;
return temp;
}
]]>