#include
声明部分：源代码含有2个文件
#include
typedef struct pnode // 定义指针//
{int coef; //定义系数//
int exp; //定义指数//
struct pnode *next;
}pnode;
pnode * creat() //creat函数用来存放多项式//
{int m,n;
pnode *head,*rear,*s;
head=(pnode *)malloc(sizeof(pnode));
rear=head;
printf("n输入指数(按递增顺序输入)：");
scanf("%d",&m);
printf("输入一元式系数(0为退出)：");
scanf("%d",&n);
do
{
s=(pnode *)malloc(sizeof(pnode));
s->coef=n; //n为系数//
s->exp=m; //m为指数//
rear->next=s;
s->next=NULL;
rear=s;
printf("n输入指数(按递增顺序输入)：");
scanf("%d",&m);
printf("输入一元式系数(0为退出)：");
scanf("%d",&n);
}while(n);
return head;
}
pnode * add(pnode *heada,pnode *headb)
{pnode *headc,*a,*b,*s,*rearc;
int sum;
a=heada->next;b=headb->next;
headc=(pnode *)malloc(sizeof(pnode));
rearc=headc;
//多项式的存放//都放到s中里//
while(a!=NULL&&b!=NULL) //指数相等,则系数相加.//
{
if(a->exp==b->exp)
{ sum=a->coef+b->coef;
if(sum)
{s=(pnode *)malloc(sizeof(pnode));
s->coef=sum;
s->exp=a->exp;
rearc->next=s;
rearc=s;
a=a->next;
b=b->next;}
else
{a=a->next;
b=b->next;
}
}
else if(a->exp
exp)
//a指数如果小于b,则a放到s中//
{ s=(pnode *)malloc(sizeof(pnode));
s->coef=a->coef;
s->exp=a->exp;
rearc->next=s;
//用下一个结点s取代下一个c//
rearc=s;
a=a->next;
}
else //如果a的指数大,则b放到s中//
{ s=(pnode *)malloc(sizeof(pnode));
s->coef=b->coef;
s->exp=b->exp;
rearc->next=s;
rearc=s;
b=b->next;
}
}
if(a)
{while(a!=NULL) //b空了放a中的项//
{s=(pnode *)malloc(sizeof(pnode));
s->coef=a->coef;
s->exp=a->exp;
rearc->next=s;
s->next=NULL;
rearc=s;
a=a->next;
}
}
else if(b)
{while(b!=NULL) //a空了放b中的项//
{s=(pnode *)malloc(sizeof(pnode));
s->coef=b->coef;
s->exp=b->exp;
rearc->next=s;
s->next=NULL;
rearc=s;
b=b->next;
}}
return headc;
}
void main()
{pnode *a,*b,*c;
printf("建立A:");
a=creat();
printf("n建立B:");
b=creat();
c=add(a,b);
c=c->next;
printf("%dx^%d",c->coef,c->exp);
c=c->next;
while(c!=NULL)
{printf("+%dx^%d",c->coef,c->exp);
c=c->next;
}
}
参考资料：
