一元多项式运算c语言版(共11页)

1、精选优质文档-倾情为你奉上#include <stdio.h>#include <stdlib.h>#include <math.h>#define OK 1;#define ERROR 0;#define TURE 1;#define FALSE 0;#define MAXSIZE 100;typedef structfloat coef;int expn;term,elemtype;typedef struct LNodeelemtype data;struct LNode *next;List,*LinkList;typedef LinkList po

2、lynomail;int Initlist(LinkList *p)*p=(LinkList)malloc(sizeof(List);(*p)->next=NULL;return OK;int cmp(term a,term b)if(a.expn<b.expn) return -1;else if(a.expn=b.expn) return 0;else return 1;int LocateElem(LinkList *p,elemtype e,LinkList *q)if(*p=NULL) return OVERFLOW;*q=(*p)->next;if(*q)=NUL

3、L)*q=*p;return ERROR;while(*q)!=NULL)if(cmp(e,(*q)->data)=0) break;else *q=(*q)->next;if(*q)!=NULL) return TURE;if(*q)=NULL) return FALSE;int MakeNode(LinkList *s,elemtype e)if(!(*s) return OVERFLOW;(*s)->data=e;(*s)->next=NULL;return OK;void InsFirst(LinkList *q,LinkList *s)(*s)->nex

4、t=(*q)->next;(*q)->next=*s;int DelFirst(LinkList *q,LinkList *s)LinkList p;p=*s;(*q)->next=p->next;return OK;void FreeNode(LinkList *p)LinkList q;q=*p;free(q);LinkList NextPos(LinkList *p,LinkList *q)return (*q)->next;void SetCurElem(polynomail *p,float m)(*p)->data).coef=m;int Lis

5、tEmpty(LinkList p)if(p->next=NULL) return TURE;if(p->next!=NULL) return FALSE;void Append(LinkList *p,LinkList *s)LinkList q;q=*p;while(q->next!=NULL) q=q->next;q->next=*s;void SortPolyn(polynomail *p)polynomail q,s,t,m,n,x,y,x1,x2; q=*p;Initlist(&m);m->data.coef=0.0;m->data

6、.expn=-1;n=m;s=q;y=s->next;t=y->next;x=q->next;x1=s;x2=t;while(x2!=NULL)while(t!=NULL)if(cmp(x->data,y->data)<=0)s=s->next;y=y->next;t=t->next;else x=y;x1=s;x2=t;if(cmp(x->data,y->data)>0)x=y;x1=s;x2=t;x1->next=x2;n->next=x;x->next=NULL;n=n->next;x1=q;

7、x=q->next;x2=x->next;s=x1;y=x;t=x2;n->next=x;x->next=NULL;q->next=NULL;free(q);*p=m;void CreatePolyn(polynomail *p,int m)polynomail h,q100,s100,x;int i;elemtype e;elemtype t100;h=*p;e.coef=0.0;e.expn=-1;h->data=e;h->next=NULL;q0=h;Initlist(&x);for(i=0;i<m;i+)Initlist(&

8、;si);printf("please input the coef: the expn:n");scanf("%f%d",&ti.coef,&ti.expn);if(!LocateElem(p,ti,&x)if(MakeNode(&si,ti) InsFirst(&qi,&si);qi+1=si;else qi+1=qi;SortPolyn(p);void PrintPolyn(polynomail q)q=q->next;if(q->data).coef>0.0&&(q

9、->data).expn!=0) printf("%.4f*x(%d)",(q->data).coef,(q->data).expn);else if(q->data).expn=0) printf("%.4f",(q->data).coef);else printf("%.4f*x(%d)",(q->data).coef,(q->data).expn);q=q->next;while(q!=NULL)if(q->data).coef>0.0&&(q->

10、data).expn!=0) printf("+%.4f*x(%d)",(q->data).coef,(q->data).expn);else if(q->data).expn=0&&(q->data).coef>0.0) printf("+%.4f",(q->data).coef);else if(q->data).expn=0&&(q->data).coef<0.0) printf("%.4f",(q->data).coef);else p

11、rintf("%.4f*x(%d)",(q->data).coef,(q->data).expn);q=q->next;printf("n");void AddPolyn(polynomail *pa,polynomail *pb)polynomail ha,hb,qa,qb;ha=*pa;hb=*pb;qa=NextPos(pa,&ha);qb=NextPos(pb,&hb);elemtype a,b;float sum;while(qa&&qb)a=qa->data;b=qb->data;

12、switch(cmp(a,b)case -1:ha=qa;qa=NextPos(pa,&qa);break;case 0:sum=a.coef+b.coef;if(sum!=0.0)SetCurElem(&qa,sum);ha=qa;else DelFirst(&ha,&qa);FreeNode(&qa);DelFirst(&hb,&qb);FreeNode(&qb);qb=NextPos(pb,&hb);qa=NextPos(pa,&ha);break;case 1:DelFirst(&hb,&q

13、b);InsFirst(&ha,&qb);qb=NextPos(pb,&hb);ha=NextPos(pa,&ha);break;if(!ListEmpty(*pb) Append(pa,&qb);FreeNode(&hb);void SubStractPolyn(polynomail *pa,polynomail *pb)polynomail ha,hb,qa,qb;ha=*pa;hb=*pb;qa=NextPos(pa,&ha);qb=NextPos(pb,&hb);elemtype a,b;float sum;while(q

14、b!=NULL)qb->data.coef=-qb->data.coef;qb=qb->next;qb=NextPos(pb,&hb);while(qa&&qb)a=qa->data;b=qb->data;switch(cmp(a,b)case -1:ha=qa;qa=NextPos(pa,&qa);break;case 0:sum=a.coef+b.coef;if(sum!=0.0)SetCurElem(&qa,sum);ha=qa;else DelFirst(&ha,&qa);FreeNode(&

15、qa);DelFirst(&hb,&qb);FreeNode(&qb);qb=NextPos(pb,&hb);qa=NextPos(pa,&ha);break;case 1:DelFirst(&hb,&qb);InsFirst(&ha,&qb);qb=NextPos(pb,&hb);ha=NextPos(pa,&ha);break;if(!ListEmpty(*pb) Append(pa,&qb);FreeNode(&hb);double EvaluatePolyn(polynomail p

16、,float x)polynomail q;double y=0.0;q=p->next;while(q!=NULL)y+=(q->data.coef)*pow(x,q->data.expn);q=q->next;return y;void DestroyPolyn(polynomail *p)free(*p);void ClearPolyn(polynomail *p)polynomail q;q=*p;while(*p!=NULL)*p=(*p)->next;free(q);q=*p;int InsertPolyn(polynomail *q,polynoma

17、il *s)while(*q)->next!=NULL)switch(cmp(*q)->next->data,(*s)->data)case -1:*q=(*q)->next;break;case 0:(*q)->data.coef+=(*s)->data.coef;return OK;case 1:(*s)->next=(*q)->next;(*q)->next=*s;return OK;(*q)->next=*s;return OK;int DeletePolyn(polynomail *q,elemtype x)polyn

18、omail t;while(*q)->next!=NULL)if(*q)->next->data.coef=x.coef)&&(*q)->next->data.expn=x.expn)t=(*q)->next;(*q)->next=t->next;free(t);return OK;else *q=(*q)->next;if(*q)->next=NULL) return FALSE;int ChangePolyn(polynomail *p,elemtype x,elemtype y)polynomail s;Make

19、Node(&s,y);DeletePolyn(p,x);InsertPolyn(p,&s);return OK;void DifferentialPolyn(polynomail *p,int n)polynomail q,s;int i;q=*p;s=q->next;for(i=0;i<n;i+)while(s!=NULL)if(s->data.expn!=0)s->data.coef*=s->data.expn;s->data.expn-;q=q->next;s=q->next;else q->next=s->ne

20、xt;s=q->next;q=*p;s=q->next;void MultiplyPolyn(polynomail *pa,polynomail *pb)int n=0,i;polynomail s,t,q100;s=*pb;while(s->next!=NULL)n+;s=s->next;s=(*pb)->next;for(i=0;i<n;i+)qi=*pa;t=qi->next;while(t!=NULL)t->data.coef*=s->data.coef;t->data.expn+=s->data.expn;t=t-&g

21、t;next;s=s->next;for(i=1;i<n;i+)AddPolyn(&q0,&qi);*pa=q0;void IntegratePolyn(polynomail *p)polynomail q,s;q=*p;s=q->next;while(s!=NULL)s->data.coef/=s->data.expn+1;s->data.expn+;q=q->next;s=q->next;double DefiniteIntegralPolyn(polynomail *p,float x,float y)IntegratePo

22、lyn(p);double f;f=EvaluatePolyn(*p,y)-EvaluatePolyn(*p,x);return f;void InvolutionPolyn(polynomail *p,int n)polynomail q100;int i;for(i=0;i<n;i+) qi=*p;for(i=1;i<n;i+) MultiplyPolyn(&q0,&qi);*p=q0;void DivisionPolyn(polynomail *p,polynomail *q)polynomail s,t,x,q1,q2,rest;int n,m;s=*p;t

23、=*q;while(s->next!=NULL) s=s->next;while(t->next!=NULL) t=t->next;m=s->data.expn;n=t->data.expn;Initlist(&x);x->data.coef=0.0;x->data.expn=-1;Initlist(&rest);rest->data.coef=0.0;rest->data.expn=-1;while(m!=0&&m>=n)Initlist(&q1);q1->data.coef=0.

24、0;q1->data.expn=-1;AddPolyn(&q1,q);x->data.coef=s->data.coef/(t->data.coef);x->data.expn=s->data.expn-t->data.expn;InsFirst(&rest,&x);q2=(*q)->next;while(q2!=NULL)q2->data.coef*=x->data.coef;q2->data.expn+=x->data.expn;q2=q2->next;SubStractPolyn(p,&q1);DestroyPolyn(&q1);s=*p;t=*q;while(s->next!=NULL) s=s->next;while(t->next!=NULL) t=t->next;m=s->