c++高精度加法求改错……

Question

#include<iostream>
#include<cstring>
using namespace std;
const int maxn = 1000 + 10;
int main(){
    int t, count = 1;
    cin >> t;
    while (t--){
        char m[maxn], n[maxn];
        cin >> m >> n;
        int a[maxn], b[maxn], c[maxn];
        int i, j, k,l;
        i = strlen(m); j = strlen(n);
        int leni = i; int lenj = j;
        while (i--){
            k = 0;
            a[k] = m[i] - '0';
            k++;
        }
        while (j--){
            l = 0;
            b[l] = n[j] - '0';
            l++;
        }
        int p, x = 0;
        for (p = 0; x || p < leni || p < lenj; p++){
            if (p < leni) x += a[p];
            if (p < lenj) x += b[p];
            c[p] = x % 10;
            x = x / 10;
        }
        cout << "Case " << count << ":" << endl;
        cout << m << " + " << n << " = ";
        while (p--){ cout << c[p-1]; }
        cout << endl << endl;
        count++;
    }
    return 0;
} 

我试了一下，在循环体内给数组a赋值还是正常的，出了循环体就只有a[0]是对的，其他都乱了，不知道是哪里错了……

Answer 1

http://www.cnblogs.com/kuangbin/archive/2011/07/22/2113836.html
http://blog.sina.com.cn/s/blog_6f6fb8260100nbg9.html