cpp

简单粗暴，注意细心
看了讨论后发现可以直接一一对应直接翻译，不用这么多ifelse， 妙啊！

#include<iostream>
#include<string>
using namespace std;

int main()
{
    string str;
    while (cin >> str)
    {
        for (int i = 0; i < str.size(); i++)
        {
            if (str[i] >= 'A' && str[i] < 'Z')
            {
                //变成小写
                str[i] = str[i] + 33;
            }
            else if (str[i] == 'Z')
            {
                str[i] = 'a';
            }
            else if (str[i] >= 'a' && str[i] <= 'c')
            {
                str[i] = '2';
            }
            else if (str[i] >= 'd' && str[i] <= 'f')
            {
                str[i] = '3';
            }
            else if (str[i] >= 'g' && str[i] <= 'i')
            {
                str[i] = '4';
            }
            else if (str[i] >= 'j' && str[i] <= 'l')
            {
                str[i] = '5';
            }
            else if (str[i] >= 'm' && str[i] <= 'o')
            {
                str[i] = '6';
            }
            else if (str[i] >= 'p' && str[i] <= 's')
            {
                str[i] = '7';
            }
            else if (str[i] >= 't' && str[i] <= 'v')
            {
                str[i] = '8';
            }
            else if (str[i] >= 'w' && str[i] <= 'z')
            {
                str[i] = '9';
            }
        }
        cout << str << endl;

    }
    return 0;
}