convertir cadena a char c
// "std::string" has a method called "c_str()" that returns a "const char*"
// pointer to its inner memory. You can copy that "const char*" to a variable
// using "strcpy()".
std::string str = "Hello World";
char buffer[50];
strcpy(buffer, str.c_str());
std::cout << buffer; //Output: Hello World
//POSTED BY eferion ON STACK OVERFLOW (IN SPANISH).
Wololegend