Right Alignment [Enosis]

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n = 16, prev = 0;
    string current_line = "", final_string = "", word = "";
    string str="Dear Sir, It isa Nur Imtiazul Haque from Khulna University of Engineering & Technology, Khulna, Department of Computer Science & Engineering (2k13).I have recently heard that Bording Visa is interested in recruiting Junior Mobile Developer. I have developed some complete android projects. I am also very interested in developing iOS application. I am attaching my CV with this mail as a candidate for the following post. afg";
    //string str = "sgfg gd 3223 23 dghdhgh ghfhjjhghjd ghj";
    vector<string>words;
    for(int i = 0; i < str.size(); i++)
    {
        if(str[i] == ' ')
        {
            words.push_back(word);
            word = "";
        }
        else word += str[i];
    }
    int charCount = 0;
    final_string += words[0];
    charCount += words[0].size();
    for(int i = 1; i < words.size(); i++)
    {
        if(charCount + 1 + words[i].size() <= n)
        {
            final_string += " " + words[i];
            charCount += 1 + words[i].size();
        }
        else
        {
            final_string += "\r\n";
            final_string.insert(prev, n - charCount, ' ');
            prev += n + 2;
            final_string += words[i];
            charCount = words[i].size();
        }
    }
    final_string.insert(prev, n - charCount, ' ');
    cout << final_string;
}