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c++ofstream

How do i create a file in a sub directory in C++?

Here is my code, how do i create a file in the sub directory contacts? Every time the file is created, it appears in the same directory as my program.

int main(){
ofstream myfile("\\contacts");
myfile.open ("a");
myfile.close();
}
Solution

  • Specify the full path in the constructor:

    ofstream myfile(".\\contacts\\a"); // or just "contacts/a"
if (myfile.is_open())
{
}

    The posted code attempts to create a file called "\\contacts" and then another file called "a".

    Note:

    • that ofstream will not create intermediate directories: "contacts" must exist prior to the use of the ofstream.
    • the destructor will close the ofstream so it is unnecessary to explicitly call myfile.close().