由于某种原因，当我输入变量move时，例如a1或c2，move[1]被打印为1，但在算术中使用时，实际上等于48 + move[1]？我也不知道这个48是从哪里来的，因为其余代码中的最高值是3。

std::string alphabet = "ABC";
std::vector<std::vector<int>> spaces{{1, 2, 3},{1, 2, 3},{1, 2, 3}};
std::vector<std::vector<int>> taken {{0, 0, 0},{0, 0, 0},{0, 0, 0}};
std::vector<char> symbols {'-','X','O'};
bool ValidateMove(std::string move, int player)
{
    std::cout << move[1] << " " << move[1] + 0 << "\n\n";
    int a;
    switch(toupper(move[0]))
    {
        case 'A':
            a = 0;
            break;
        case 'B':
            a = 1;
            break;
        case 'C':
            a = 2;
            break;
    }

    for (int i = 0; i < spaces[a].size(); i++) // FOR SOME REASON MOVE[1] = 48 + i!!!
    {

        /* <debugging prints> */

        std::cout << "\nspaces[a][i]:" << spaces[a][i] << "    move[1]:" << move[1] << "\n"; // outputs as expected
        if (spaces[a][i] > move[1]){
            std::cout << "greater";
        } // shouldn't work and doesn't
        if (spaces[a][i] < move[1]){
            std::cout << "less than";
            std::cout << "\n -= " << move[1]- 0;
        } //SHOULDN'T WORK BUT DOES -> move[1] - 0 is 48 + move[1] but when you just std::cout << move[1] you get what you should?

        /* </debugging prints> */

        if (spaces[a][i] == move[1])
        {
            if (player == 1)
            {
                taken[a][i] == 1;
            }
            else
            {
                taken[a][i] == 2;
            }
            for (int f = 0; f < taken.size(); f++)
            {
                for (int g = 0; g < taken[f].size(); g++)
                {
                    std::cout << taken[f][g] << " ";
                }
                std::cout << "\n";
            }

            spaces[a].erase(spaces[i].begin() + i);
            return true;
        }
    }
    return false;
}