Answer:
ifstream inputFile;
inputFile.open("Friends.txt");
Explanation:
Though, the programming language is not stated, questions like this are often from C++.
The first statement defines the ifstream object using the following syntax.
ifstream [object_name]
In this case, the object name is inputFile
So, the syntax becomes
ifstream inputFile;
The next line opens a file using the following syntax.
[object_name].open("Filename")
Here, object_name is inputFile and filename is Friends.txt
So, the open statement becomes
inputFile.open("Friends.txt")
