注：报错在
41，52，57，71行
内容为：未命名1.cpp [Error] 'bigint bigint::operator+(bigint, bigint)' must take either zero or one argument
最后几行是测试代码

#include<bits/stdc++.h>
using namespace std;
const int N=200;
struct bigint
{
	int len,a[N];
	bigint(int x=0)
	{
		memset(a,0,sizeof(a));
		for(len=1;x;len++)
		{
			a[len]=x%10;
			x/=10;
		}
		len--;
	}
	int &operator[](int i)
	{
		return a[i];
	}
	void fix(int maxlen)
	{
		len=maxlen;
		for(int i=1;i<=len;i++)
		{
			a[i+1]+=a[i]/10;
			a[i]%=10;
		}
		while(!a[len])
		{
			len--;
		}
	}
	void print()
	{
		for(int i=max(len,1);i>=1;i--)
		{
			cout<<a[i];
		}
	}
	bigint operator+(bigint a,bigint b)
	{
		bigint c;
		int len=max(a.len,b.len);
		for(int i=1;i<=len;i++)
		{
			c[i]+=a[i]+b[i];
		}
		c.fix(len+1);
		return c;
	}
	bigint operator+(bigint a,int b)
	{
		bigint c(b);
		return a+c;
	}
	bigint operator*(bigint a,bigint b)
	{
		bigint c;
		int len=a.len*b.len;
		for(int i=1;i<=a.len;i++)
		{
			for(int j=1;j<=b.len;j++)
			{
				c[i+j-1]+=a[i]*b[j];
			}
		}
		c.fix(len+15);
		return c;
	}
	bigint operator*(bigint a,int b)
	{
		bigint c;
		int len=a.len;
		for(int i=1;i<=a.len;i++)
		{
			c[i]=a[i]*b;
		}
		c.fix(len+15);
		return c;
	}
};
int main()
{
	int x,y;
	cin>>x>>y;
	bigint a(x),b(y);
	bigint c=a+b;
	bigint d=a*b;
	bigint e=a*10;
	c.print();
	d.print();
	e.print();
	return 0;
}