Which of the following is correct for opening a file and attaching it to a file named File.txt? Assume proper file inclusion and proper using directives.

Question

a)```
open(outStream, “File.txt”, ios::app)
```
b) ```
ifstream inStream;
inStream.open(“File.txt”);
```
c) ```
ifstream inStream(“File.txt”);
```
d) ```
ofstream inStream;
onStream.open(“File.txt”, ios::app);
```
e) ```
ifstream inStream(“File.txt”, ios::app);
```

Answer 1

a)```
open(outStream, “File.txt”, ios::app)
```