How to replace all occurrences of a character in string?

Question

What is the effective way to replace all occurrences of a character with another character in std::string?

Answer 1

Old School :-)

std::string str = "H:/recursos/audio/youtube/libre/falta/"; 

for (int i = 0; i < str.size(); i++) {
    if (str[i] == '/') {
        str[i] = '\\';
    }
}

std::cout << str;

Result:

H:\recursos\audio\youtube\libre\falta\