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How to convert a string to a char *?

April 26, 2017char convert String

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How to convert a string to a char *?

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This question deals with Standard C++’s string class. Please note that this is wrong: #include int main() { std::string ComeauCpp(“Check out Comeau C++”); char *p = ComeauCpp; // nope } To wit, there is no conversion from string to char *. Some folks would try to “correct” this by doing this: char *p = &ComeauCpp; // If at first you don’t succeed, try, try, again But this is wrong too, because there is no conversion from string * to char *. As if two wrongs were not enough, some would still try to correct this as: char *p = (char *)&ComeauCpp; // If two wrong’s don’t make a right, try three under that premise that there was now a char * on either side. The problem here is that this assumes that the string class is implemented with a char array buffer, which may not be true. And even if it were, it assumes that the buffer is at the start of the string class, not to mention a violation of encapsulation. The right way to do this is to use strings conversion feature, its member fu