3.5进制转换

#include <iostream>
#include<cstdio>
#include<vector>
using namespace std;

int main()
{
    int a,b,c,d;
    scanf("%d %d %d",&a,&b,&c);
    int sum=a+b;
    vector<int>ans;
    while(sum/c!=0){
        d=sum%c;
        sum=sum/c;
        ans.push_back(d);
    }
    ans.push_back(sum);
    int len =ans.size();
    for(int i=len;i>0;i--)
        printf("%d",ans[i]);
}