#include <iostream>
using namespace std;
void change(string &str);
int main()
{
//setlocale(LC_ALL, "RUSSIAN");
string str = "The sun is hot.";
cout << str << endl;
change(str);
cout << str << endl;
return 0;
}
void change(string &str)
{
for (string::size_type i = 0; i < str.size(); ++i) {
if (str[i] == ' ') {
str.insert(i, ",");
i++;
}
}
}
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