Consider the following program segment. Which of the following statements at Line 3 can be used to open the file progdata.dat and input data from this file into x and y at Line 4?

A) inFile.open("progdata.dat");
B) inFile(open,"progdata.dat");
C) open.inFile("progdata.dat");
D) open(inFile,"progdata.dat");

Question

Consider the following program segment. Which of the following statements at Line 3 can be used to open the file progdata.dat and input data from this file into x and y at Line 4?

A) inFile.open("progdata.dat"); 
B) inFile(open,"progdata.dat"); 
C) open.inFile("progdata.dat"); 
D) open(inFile,"progdata.dat");

Quizplus · Accepted Answer

Option A is the correct syntax to open a file named "progdata.dat" using an object named "inFile". The file can be opened for reading or writing depending on the needs of the program, but for this program segment, we assume that it needs to be read from. Therefore, option A will allow the program to open the file and read the data into x and y. Option B is incorrect because the syntax is not valid, and option C is incorrect because it tries to access a member function before the object is created. Option D is incorrect because the parameters are in the wrong order.

Consider the Following Program Segment