C实现记录个人资料

代码：

#include <stdio.h>#include <ctype.h>#include <stdlib.h>#include <string.h>struct Family *get_person(void);    /* Prototype for input function */char related(struct Family *pmember1, struct Family *pmember2);char set_ancestry(struct Family *pmember1, struct Family *pmember2);struct Date   {int day;int month;int year;};struct Family                      /* Family structure declaration   */{struct Date dob;char name[20];char father[20];char mother[20];struct Family *next;            /* Pointer to next structure      */struct Family *previous;        /* Pointer to previous structure  */struct Family *p_to_pa;         /* Pointer to father structure   */struct Family *p_to_ma;         /* Pointer to mother structure   */};void main(){struct Family *first = NULL;    /* Pointer to first person        */struct Family *current = NULL;  /* Pointer to current person      */struct Family *last = NULL;     /* Pointer to previous person     */char more = '\0';               /* Test value for ending input    */for( ; ; ){printf("\nDo you want to enter details of a%s person (Y or N)? ", first != NULL?"nother " : "" );scanf(" %c", &more);if(tolower(more) == 'n') break;current = get_person();if(first == NULL){first = current;            /* Set pointer to first Family    */last = current;             /* Remember for next iteration    */}else{last->next = current;  /* Set next address for previous Family */  current->previous = last; /* Set previous address for current */last = current;           /* Remember for next iteration */             }}current = first;while(current->next != NULL)  /* Check for relation for each person in    */{                       /* the list up to second to last            */int parents = 0;      /* Declare parent count local to this block */last = current->next; /* Get the pointer to the next              */while(last != NULL)   /* This loop tests current person           */{                     /* against all the remainder in the list    */if(related(current, last))         /* Found a parent ?          */if(++parents == 2)   /* Yes, update count and check it        */break;             /* Exit inner loop if both parents found */last = last->next;     /* Get the address of the next           */} current = current->next;   /* Next in the list to check             */}/* Now tell them what we know *//* Output Family data in correct order */current = first;while (current != NULL)  /* Output Family data in correct order  */{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);if(current->p_to_pa != NULL )printf("\n\t%s's birth date is %d/%d/%d  ",current->father, current->p_to_pa->dob.day,current->p_to_pa->dob.month, current->p_to_pa->dob.year);if(current->p_to_ma != NULL)printf("and %s's birth date is %d/%d/%d.\n  ",current->mother, current->p_to_ma->dob.day,current->p_to_ma->dob.month, current->p_to_ma->dob.year);current = current->next;  /* current points to next in list       */}/* Now free the memory */  current = first;while(current->next != NULL){last = current;     /* Save pointer to enable memory to be freed */current = current->next; /* current points to next in list       */free(last);         /* Free memory for last                      */}}/*   Function to input data on Family members   */struct Family *get_person(void){struct Family *temp;         /* Define temporary structure pointer *//* Allocate memory for a structure */temp = (struct Family*) malloc(sizeof(struct Family));printf("\nEnter the name of the person: ");scanf("%s", temp -> name );         /* Read the Family's 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 );        /* Get the father's name */printf("\nWho is %s's mother? ", temp -> name );scanf("%s", temp -> mother );      /* Get the mother's name */temp->next = temp->previous = NULL; /* Set pointers to NULL */temp->p_to_pa = temp->p_to_ma = NULL;    /* Set pointers to NULL  */return temp;          /* Return address of Family structure */}char set_ancestry(struct Family *pmember1, struct Family *pmember2){if(strcmp(pmember1->father, pmember2->name) == 0){pmember1->p_to_pa = pmember2;return 1;}if( strcmp(pmember1->mother, pmember2->name) == 0){pmember1->p_to_ma = pmember2;return 1;}elsereturn 0;}/* Fill in pointers for mother or father relationships */char related (struct Family *pmember1, struct Family *pmember2){return set_ancestry(pmember1, pmember2) ||set_ancestry(pmember2, pmember1);}

效果图：