题目描述

模板题：高精度加法

C++代码

#include <bits/stdc++.h>
#include <vector>
using namespace std;

vector<int> add(vector<int> &A, vector<int> &B){
    vector<int> C;
    int t = 0;
    for(int i = 0; i < A.size() || i < B.size(); i++){
        if(i < A.size()) 
            t += A[i];
        if(i < B.size())
            t += B[i];
        C.push_back(t % 10);
        t /= 10;
    }
    if(t)
        C.push_back(t);
    return C;
}

int main(){
    string a, b;
    vector<int> A, B, C;
    cin >> a >> b;
    for(int i = a.size() - 1; i >= 0; i--)
        A.push_back(a[i] - '0');
    for(int i = b.size() - 1; i >= 0; i--)
        B.push_back(b[i] - '0');
    C = add(A, B);
    for(int i = C.size() - 1; i >= 0; i--)
        cout << C[i];
    cout << endl;
}