求看看此高精乘法代码有何错误:
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int MAXN=1005;
string s1,s2;
int a[MAXN],b[MAXN],c[MAXN],la,lb,lc;
int main()
{
cin>>s1>>s2;
la=s1.size();lb=s2.size();
for(int i=0;i<la;i++)a[i]=s1[i]-'0';
reverse(a,a+la);
for(int i=0;i<lb;i++)b[i]=s2[i]-'0';
reverse(b,b+lb);
lc=la+lb-1;
for(int i=0;i<la;i++)
for(int j=0;j<lb;j++)
c[i+j]+=a[i]*b[i];
for(int i=0;i<lc;i++)
if(c[i]>=10)c[i+1]+=c[i]/10,c[i]%=10;
while(c[lc]>0)lc++;
while(c[lc-1]==0&&lc>1)lc--;
for(int i=lc-1;i>=0;i--)cout<<c[i];
return 0;
}