23. Comma Replacement C++

#include <iostream>
#include <string>

void ReplaceComma(std::string&);

int main()
{

    std::string s;
    std::cin >> s;

    ReplaceComma(s);

    std::cout << s << std::endl;

    return 0;
}

void ReplaceComma(std::string& s)
{
    for (char& ch : s)
        if (ch == ',')
            ch = ' ';
}