ofstream - creating file problem

[mybluehair]

I need to create a new txt file using ofstream, but I need to use a string to name the file.

For example:

string string1 = "testfile.txt";
ofstream myfile;
myfile.open (string1);

but when I try, it says I can do this because string is not a valid variable type for an 'open' call.

Any ideas?

[Danny_501]

I need to create a new txt file using ofstream, but I need to use a string to name the file.

For example:

string string1 = "testfile.txt";
ofstream myfile;
myfile.open (string1);

but when I try, it says I can do this because string is not a valid variable type for an 'open' call.

Any ideas?

try :

myfile.open (string1.c_str());

[mybluehair]

try :

myfile.open (string1.c_str());

Work :) thanks.

But why does it work? whats the meaning?

[Danny_501]

because ofstream.open() only takes a "const char * filename" as the argument, not a string.
string.c_str() converts a string into a c string (char pointer).
look at this website for more details:
http://www.cplusplus.com/reference/iostream/ofstream/open/