Test of string

#include <iostream>

using namespace std;

int main()
{
    string a = "Hello";
    string b = "World!";
    string c = a + b;
    cout << c << endl;

    cout << "c.size() = " << c.size() << endl;

    for(unsigned i = 0; i < c.size(); i++){
        cout << "c[" << i << "] : " << (char)c[i] << endl;
    }

    return 0;
}