ACM题目————A除以B

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <cctype>
#include <cstdlib>
#include <stack>
#include <cmath>
#include <string>
#include <queue>
#define INF 65535

using namespace std;

int main() {
    char A[1100], Q[1100];
    int B, R, i, j, length, sum;
    scanf("%s", A);
    scanf("%d", &B);
    length = strlen(A);
    sum = 0;
    for(i = 0, j = 0; i < length; i ++) {
        sum = 10 * sum + A[i] - ‘0‘;
        if(i == 0 && sum < B && length > 1) {
        } else {
        Q[j ++] = sum / B + ‘0‘;
        }
        sum = sum % B;
    }
    R = sum;
    Q[j] = ‘\0‘;
    printf("%s %d", Q, R);
    return 0;
}