include include

void invertString(const std::string& str, int index)
{
if (index < 0)
{
return;
}

std::cout << str[index];
invertString(str, index - 1);

}

int main()
{
std::string str;
std::cout << "Enter a string: ";
std::getline(std::cin, str);

invertString(str, str.length() - 1);
return 0;

}