1016 部分A+B （15 分)

// 题目不难，感觉变量定义的有点儿多了
#include <iostream>
#include <cmath>
using namespace std;
int main(){
    int i = 0, j = 0, ta = 0, tb = 0, suma = 0, sumb = 0;
    int A, Da, Pa, B, Db, Pb;
    cin >> A >> Da >> B >> Db;
    while (A != 0){
        ta = A % 10;
        if (ta == Da){
            suma += Da * pow(10,i);
            i++;
        }
        A /= 10;
    }
    while (B != 0){
        tb = B % 10;
        if (tb == Db){
            sumb += Db * pow(10,j);
            j++;
        }
        B /= 10;
    }
    cout << suma + sumb << endl;
    return 0;
}