1017. A除以B (20)

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s,s1;
    cin>>s;
    int a;
    cin>>a;
    s1.clear();
    int t=s[0]-'0';
    if(t>=a)
    s1.push_back(t/a+'0');
    int len=s.size();
    int r=0;
    for(int i=1;s[i];i++)
    {
        r=t%a;
        t=r*10+s[i]-'0';
        s1.push_back(t/a+'0');
    }
    if(len==1&&s[0]-'0'<a)
    {
        cout<<"0"<<" "<<s[0]-'0'<<endl;
    }
    else
        cout<<s1<<" "<<t%a<<endl;
    return 0;
}

这题难是不难，主要是运用到除法 

对于string又有新的认识