P1017 进制转换

模拟水题，直接上代码

#include <bits/stdc++.h>
using namespace std;
const int maxn = 100000;
int main() {
int n, r;
cin >> n >> r;
int ans[maxn];
int tmp = n;
int pos = 0;
while(tmp != 0) {
int cheng = tmp / r;
int yu = tmp - r * cheng;
if(yu < 0) cheng++;
ans[pos++] = tmp - r * cheng;
tmp = cheng;
}
pos--;
cout << n << '=';
for(int i = pos; i >= 0; i--) {
if(ans[i] >= 10) {
cout << (char)('A' + ans[i] - 10);
}
else cout << ans[i];
}
cout << "(base" << r << ')';
return 0;
}