题解 | A + B

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


string num[10] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};

int stringToInt(string s) {
    for (int i = 0; i < 10; i++) {
        if (num[i] == s)return i;
    }
    return -1;
}

int realInt(string a) {
    int x = 0;
    while (a.find(' ') != a.size() - 1) {
        x *= 10;
        x += stringToInt(a.substr(0, a.find(' ')));
        a = a.substr(a.find(' ') + 1);
    }
    x *= 10;
    x += stringToInt(a.substr(0, a.find(' ')));
    return x;
}

int main() {
    string s;
    while (getline(cin, s)) {
        string a = s.substr(0, s.find('+'));
        string b = s.substr(s.find('+') + 2);
        b = b.substr(0, b.find('='));
        int x = realInt(a), y = realInt(b);
        if(x==0&&y==0)break;
        cout<<x+y<<endl;
    }
}

本题难度在于如何把int给抽出来，需要做大量实验去找index，然后得到的代码如上，整体难度很低