以下程序由标准C实现,并经严格测试.程序通过单链表存储集合
#include
#include
typedef struct pointer{
char dat;
struct pointer *link;
} pointer;
void readdata(pointer *head){ //读集合
pointer *p;
char tmp;
printf("input data ('0' for end):");
scanf("%c",&tmp);
while(tmp!='0')
{
if((tmp'z'))
{
printf("输入错误!必须为小写字母!\n");
return;
}
p=(pointer *)malloc(sizeof(struct pointer));
p->dat=tmp;
p->link=head->link;
head->link=p;
scanf("%c",&tmp);
}
}
void disp(pointer *head){ //显示集合数据
pointer *p;
p=head->link;
while(p!=NULL)
{
printf("%c ",p->dat);
p=p->link;
}
printf("\n");
}
void bing(pointer *head1,pointer *head2, pointer *head3){ //计算集合1与集合2的并
pointer *p1,*p2,*p3;
p1=head1->link;
while(p1!=NULL)
{
p3=(pointer *)malloc(sizeof(struct pointer));
p3->dat=p1->dat;
p3->link=head3->link;
head3->link=p3;
p1=p1->link;
}
p2=head2->link;
while(p2!=NULL)
{
p1=head1->link;
if (p1=11) and (p1-p2>,'.。if(p1 == null||p2 == null||p3 == null||p4 == null)。stu*del=null,*p1=null,*p2=null。
p1=p1->link;
if(p1==NULL)
{
p3=(pointer *)malloc(sizeof(struct pointer));
p3->dat=p2->dat;
p3->link=head3->link;
head3->link=p3;
}
p2=p2->link;
}
}
void jiao(pointer *head1,pointer *head2, pointer *head3){ //计算集合1与集合2的交
pointer *p1,*p2,*p3;
p1=head1->link;
while(p1!=NULL)
{
p2=head2->link;
while((p2!=NULL)&&(p2->dat!=p1->dat))
p2=p2->link;
if((p2!=NULL)&&(p2->dat=p1->dat))
{
p3=(pointer *)malloc(sizeof(struct pointer));
p3->dat=p1->dat;
p3->link=head3->link;
head3->link=p3;
}
p1=p1->link;
}
}
void cha(pointer *head1,pointer *head2, pointer *head3){ //计算集合1与集合2的差
pointer *p1,*p2集合的交并差c语言集合的交并差c语言,*p3;
p1=head1->link;
while(p1!=NULL)
{
p2=head2->link;
if (p1=11) and (p1-p2>,'.。if(p1 == null||p2 == null||p3 == null||p4 == null)。stu*del=null,*p1=null,*p2=null。
p2=p2->link;
if(p2==NULL)
{
p3=(pointer *)malloc(sizeof(struct pointer));
p3->dat=p1->dat;
p3->link=head3->link;
head3->link=p3;
}
p1=p1->link;
}
}
main(){
pointer *head1,*head2,*head3;
head1=(pointer *)malloc(sizeof(struct pointer));
head1->link=NULL;
head2=(pointer *)malloc(sizeof(struct pointer));
head2->link=NULL;
head3=(pointer *)malloc(sizeof(struct pointer));
head3->link=NULL;
printf("输入集合1:\n");
readdata(head1);
printf("输入集合2:\n");
readdata(head2);
printf("集合1为:\n");
disp(head1);
printf("集合2为:\n");
disp(head2);
printf("集合1与集合2的并为:\n");
bing(head1,head2,head3);
disp(head3);
head3->link=NULL;
printf("集合1与集合2的交为:\n");
jiao(head1,head2,head3);
disp(head3);
head3->link=NULL;
printf("集合1与集合2的差为:\n");
cha(head1,head2,head3);
disp(head3);
}
测试用例为(0表示集合输入结束):
fdsa0
savc0
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