84 帮忙找找问题

#include <iostream>
#include <cstring>
using namespace std;
char a1[50001];
int a[50001];
int b;
int c[50001];
int main()
{
    int x=0;
    cin >> a1;int lena = strlen(a1);
    cin >> b;
    for (int i=0;i<lena;i++)
    {
        a[i+1] = a1[i] - '0';
    }
    for (int i=1;i<=lena;i++)
    {
        c[i] = (x*10 + a[i] ) / b;
        x = (x*10+a[i]) % b;
    }
    int lenc = 1;
    while(c[lenc] == 0 && lenc <lena)
    {
        lenc++;
    }
    for (int i=lenc;i<=lena;i++) cout << c[i];
    return 0;
}
```谢谢你能看完呆马 😳🐎