题解 | #字符串加解密#

#include<iostream>
#include<string>

using namespace std;

void encipher(string s){
    for(int i=0;i<s.size();i++){
        if (65 <= (int)s[i] && (int)s[i] < 90)
            cout << char((int)s[i] + 33);
        else if ((int)s[i] == 90)
            cout << char(97);

        else if (97 <= (int)s[i] && (int)s[i] < 122)
            cout << char((int)s[i] - 31);
        else if ((int)s[i] == 122)
            cout << char(65);

        else if (48 <= (int)s[i] && (int)s[i] < 57)
            cout << char((int)s[i] + 1);
        else if ((int)s[i] == 57)
            cout << char(48);

        else
            cout << s[i];
    }
    cout<<endl;

}


void decipher(string s){
    for(int i=0;i<s.size();i++){
        if (65 < (int)s[i] && (int)s[i] <= 90)
            cout << char((int)s[i] + 31);
        else if ((int)s[i] == 65)
            cout << char(122);

        else if (97 < (int)s[i] && (int)s[i] <= 122)
            cout << char((int)s[i] - 33);
        else if ((int)s[i] == 97)
            cout << char(90);

        else if (48 < (int)s[i] && (int)s[i] <= 57)
            cout << char((int)s[i] - 1);
        else if ((int)s[i] == 48)
            cout << char(57);

        else
            cout << s[i];
    }
    cout<<endl;
}


int main(){

    string str1,str2;
    while(cin>>str1>>str2){
        encipher(str1);
        decipher(str2);
    }
    return 0;
}