how to check success of open function for ifstream

stmfc

how can i check the success of open function for ifstream class?
see the code below:

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ifstream fin;

fin.open("myfile.dat");

devikacs

Quote:

Originally Posted by stmfc

how can i check the success of open function for ifstream class?
see the code below:

Expand|Select|Wrap|Line Numbers

 
ifstream fin;

fin.open("myfile.dat");

public member function is_open would check if the file is open.
Or you can check if fin is null or not

archonmagnus

Quote:

Originally Posted by stmfc

how can i check the success of open function for ifstream class?
see the code below:

Expand|Select|Wrap|Line Numbers

 
ifstream fin;

fin.open("myfile.dat");

Use the good() or fail() members of fstream. For example, in your case:

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ifstream fin;

fin.open("myfile.dat");
 
if (fin.good())

    cout<<"Open Success!"<<endl;

else

    cout<<"Open Failure!"<<endl;

re: how to check success of open function for ifstream