// strtype_02.cpp -- assigning, adding, and appending
#include <iostream>
#include <string>               // make string class available
int main()
{
    using namespace std;

    // declaring and initializing string s1, declaring s2, and s3
    string s1 = "chicken";
    string s2, s3;

    // assigning other variable values
    cout << "You can assign one string object to another: s2 = s1\n";
    s2 = s1;
    
    // assigning strings using quotes
    cout << "s1: " << s1 << ", s2: " << s2 << endl;
    cout << "You can assign a C-style string to a string object.\n";
    cout << "s2 = \"lips\"\n";
    
    s2 = "lips";
    
    // concatenating strings
    cout << "s2: " << s2 << endl;
    cout << "You can concatenate strings: s3 = s1 + s2\n";
    
    s3 = s1 + s2;
    
    // appending strings
    cout << "s3: " << s3 << endl;
    cout << "You can append strings.\n";
    
    s1 += s2;
    
    cout <<"s1 += s2 yields s1 = " << s1 << endl;
    
    s2 += " for a day";
    
    cout <<"s2 += \" for a day\" yields s2 = " << s2 << endl;
}