Question

People who learned how to type before word processors often add two spaces after a period ending a sentence. Write a function singleSpaces that accepts a string and returns that string with all occurrences of two spaces after a “.” into changed single spaces.)

This is what I have; what am I doing wrong?

#include <cmath>
#include <iostream>
using namespace std;



string forceSingleSpaces1 (string s) {
    string r = "";
    int i = 0;
    while (i < static_cast <int> (s.length()))  {
        if (s.at(i) != ' ')  {
            r = r + s.at(i);
            i++;
        } else  {
            r +=  ' ';
            while (i < static_cast <int> (s.length()) && s.at(i) == ' ')
                i++;
        }
    }
    return r;
}

Answer 1

#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;

//1. loop through the string looking for ".  "
//2. when ".  " is found, delete one of the spaces
//3. Repeat process until ".  " is not found.  

string forceSingleSpaces1 (string str) {
    size_t found(str.find(".  "));
    while (found !=string::npos){
        str.erase(found+1,1);
        found = str.find(".  ");
    }

    return str;
}

int main(){

    cout << forceSingleSpaces1("sentence1.  sentence2.  end.  ") << endl;

    return EXIT_SUCCESS;
}