高精炸了求助

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#define N 1009
using namespace std;
int x,y;
struct BigNumber{
    int len,num[N];
};
BigNumber make(int n){
    BigNumber big;
    big.len=0;
    while(n){
        big.num[++big.len]=n%10;
        n/=10;
    }
    return big;
}
BigNumber gjj(BigNumber a,BigNumber b){
    int addnext=0;
    BigNumber c;
    c.len=0;
    while(c.len<a.len||c.len<b.len){
        c.num[++c.len]=a.num[c.len]+b.num[c.len]+addnext;
        addnext=0;
        if(c.num[c.len]>=10){
            c.num[c.len]-=10;
            addnext=1;
        }
    }
    if(addnext){
        c.num[++c.len]=addnext;
    }
    return c;
}
void Printf(BigNumber n){
    for(int i=n.len;i>=1;i--){
        cout<<n.num[i];
    }
}
int main(){
    cin>>x>>y;
    Printf(gjj(make(x),make(y)));
    return 0;
}