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질문 제목 : 곱셈좀 알려주세요..뭐가 틀렸는지좀 알려주세요..질문 내용 :
#include stdio.h
#include stdlib.h
typedef struct listnode{
float coef;
int expo;
struct listnode* link;
}listnode;
typedef struct listhead{
listnode* head;
}listhead;
listhead* createlinkedlist(void);
void addlastnode(listhead* l, float coef, int expo);
void initlinkedlist(listhead* l);
void addpoly(listhead* c, listhead* pt);
void printpoly(listhead* l);

listhead* createlinkedlist(void)
{
listhead* l;
l=(listhead *)malloc(sizeof(listhead));
l-head=null;
return l;
}
void addlastnode(listhead* l, float coef, int expo)
{
listnode* newnode;
listnode* p;
newnode = (listnode *)malloc(sizeof(listnode));
newnode-coef = coef;
newnode-expo = expo;
newnode -link=null;
if(l-head == null){
l-head = newnode;
return;
}
else{
p = l-head;
while(p-link != null){
p = p-link;
}
p-link = newnode;
}
}
void initlinkedlist(listhead* l){
listhead* pt;
while(l-head != null){

l-head = l-head-link;
pt=null;
free(pt);
}
}

void addpoly(listhead* c, listhead* pt)
{
listnode* pc = c-head;
listnode* ppt = pt-head;
float sum;
while(pc && ppt){
if(pc-expo == ppt-expo){
sum = pc-coef + ppt-coef;
addlastnode(c,sum,pc-expo);
pc=pc-link; ppt=ppt-link;

}
else if(pc-expo ppt-expo){
addlastnode(c, pc-coef, pc-expo);
pc=pc-link;

}
else{
addlastnode(c,ppt-coef,ppt-expo);
ppt=ppt-link;

}
}printf(234324);

for(;ppt!=null;ppt=ppt-link)
addlastnode(c, ppt-coef, ppt-expo);
for(;pc!=null;pc=pc-link)
addlastnode(c, pc-coef, pc-expo);

}void multypoly(listhead* a, listhead* b, listhead* c, listhead* pt)
{

listnode* pa = a-head;
listnode* pb = b-head;

float sum;
while(pa!=null && pb!=null){
while(pa!=null){
sum = pa-coef * pb-coef;
addlastnode(pt,sum,pa-expo+pb-expo);
pa=pa-link;
}
addpoly(pt,c);
pa=a-head;
pb=pb-link;
initlinkedlist(pt);
}

}
void printpoly(listhead* l)
{
listnode* p = l-head;
for(;p;p=p-link){
printf(%3.0fx^%d,p-coef,p-expo);
}
}
void main(void){
listhead *a,*b,*c,*pt;
a=createlinkedlist();
b=createlinkedlist();
c=createlinkedlist();
pt=createlinkedlist();
addlastnode(a, 4,3);
addlastnode(a, 3,2);
addlastnode(a, 5,1);
printf(\n a(x)=);
printpoly(a);
addlastnode(b, 4,4);
addlastnode(b, 2,3);
addlastnode(b, 1,2);
addlastnode(b, 3,1);
addlastnode(b, 2,0);
printf(\n b(x)=);
printpoly(b);
multypoly(a, b, c,pt);
printf(\n c(x)=);
printpoly(c);
getchar();
}

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