alphabetic_sequence.cpp

#include <iostream>
using namespace std;

int main() {
    cout << "Please, enter three string to sort them by order: ";
    string s1, s2, s3;
    cin >> s1 >> s2 >> s3;
    //calculating
    string fplace, splace, tplace;
    if (s1 >= s2 && s1 >= s3) {     //if s1 is largest
        tplace = s1;
        if (s2 >= s3) {
            splace = s2;
            fplace = s3;
        }
        else {
            splace = s3;
            fplace = s2;    
        }
    }
    else {
        if (s2 >= s1 and s2 >= s3) {    //if s2 is largest
            tplace = s2;
            if (s1 >= s3) {
                splace = s1;
                fplace = s3;
            }
            else {
                splace = s3;
                fplace = s1;
            } 
        }
        else {
            tplace = s3;
            if (s2 >= s1) {
                splace = s2;
                fplace = s1;
            }
            else {
                splace = s1;
                fplace = s2;
            }
        }
    }
    cout << fplace << ", " << splace << ", " << tplace;
    
    system("pause");
    return 0;
}