C + + converts std::string to char*

Reference:

std::string to char*

C + + converts std::string to char*

There is currently no method for direct conversion. The C-style string must be obtained through the method of the string object c_str() :

Note that this method returns a type const char * that cannot directly modify the returned C-style string and, if necessary, must first copy the string:

std::string str = "string";char *cstr = new char[str.length() + 1];strcpy(cstr, str.c_str());// 对cstr的处理delete [] cstr;

Another way to do this is to store the string converted by string C-style in a vector :

std::vector<char> cstr(str.c_str(), str.c_str()+str.size()+1);

2018.7.2

C + + converts std::string to char*