I need to use an std::string
to store data retrieved by fgets()
. To do this I need to convert the char*
return value from fgets()
into an std::string
to store in an array. How can this be done?
std::string
has a constructor for this:
const char *s = "Hello, World!";
std::string str(s);
Just make sure that your char *
isn't NULL
, or else the behavior is undefined.
If you already know size of the char*, use this instead
char* data = ...;
int size = ...;
std::string myString(data, size);
This doesn't use strlen.
EDIT: If string variable already exists, use assign():
std::string myString;
char* data = ...;
int size = ...;
myString.assign(data, size);