// This program reads floating point data from a data file and places those // values into the private data member called values (a floating point array) // of the FloatList class. Those values are then printed to the screen. // The input is done by a member function called GetList. The output // is done by a member function called PrintList. The amount of data read in // is stored in the private data member called length. The member function // GetList is called first so that length can be initialized to zero. #include #include #include using namespace std; const int MAX_LENGTH = 50; // MAX_LENGTH contains the maximum length of our list class FloatList // Declares a class that contains an array of // floating point numbers { public: void getList(ifstream&); // Member function that gets data from a file void printList() const;// Member function that prints data from that // file to the screen. FloatList();// constructor that sets length to 0. ~FloatList();// destructor private: int length;// Holds the number of elements in the array float values[MAX_LENGTH]; // The array of values }; int main() { ifstream tempData; // Defines a data file // Fill in the code to define an object called list of the class FloatList cout << fixed << showpoint; cout << setprecision(2); tempData.open("temperatures.txt"); // Fill in the code that calls the getList function. // Fill in the code that calls the printList function. return 0; } FloatList::FloatList() { // Fill in the code to complete this constructor that // sets the private data member length to 0 } // Fill in the entire code for the getList function // The getList function reads the data values from a data file // into the values array of the class FloatList // Fill in the entire code for the printList function // The printList function prints to the screen the data in // the values array of the class FloatList // Fill in the code for the implementation of the destructor This program has an array of floating point numbers as a private data member of a class. The data file contains floating point temperatures which are read by a member function of the class and stored in the array. Why does the member function printList have a const after its name but getList does not? Fill in the code so that the program reads in the data values from the temperature file and prints them to the screen with the following output: 78.90 87.40 60.80 70.40 75.60 Add code (member function, call and function implementation) to print the average of the numbers to the screen so that the output will look like the output from Exercise 2 plus the following: The average temperature is 74.62
// This program reads floating point data from a data file and places those // values into the private data member called values (a floating point array) // of the FloatList class. Those values are then printed to the screen.
// The input is done by a member function called GetList. The output
// is done by a member function called PrintList. The amount of data read in // is stored in the private data member called length. The member function
// GetList is called first so that length can be initialized to zero.
#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
const int MAX_LENGTH = 50; // MAX_LENGTH contains the maximum length of our list
class FloatList // Declares a class that contains an array of
// floating point numbers
{ public:
void getList(ifstream&); // Member function that gets data from a file
void printList() const;// Member function that prints data from that
// file to the screen.
FloatList();// constructor that sets length to 0.
~FloatList();// destructor
private:
int length;// Holds the number of elements in the array
float values[MAX_LENGTH]; // The array of values
};
int main() {
ifstream tempData; // Defines a data file
// Fill in the code to define an object called list of the class FloatList
cout << fixed << showpoint;
cout << setprecision(2);
tempData.open("temperatures.txt");
// Fill in the code that calls the getList function.
// Fill in the code that calls the printList function.
return 0; }
FloatList::FloatList() {
// Fill in the code to complete this constructor that
// sets the private data member length to 0
}
// Fill in the entire code for the getList function
// The getList function reads the data values from a data file
// into the values array of the class FloatList
// Fill in the entire code for the printList function
// The printList function prints to the screen the data in
// the values array of the class FloatList
// Fill in the code for the implementation of the destructor
This program has an array of floating point numbers as a private data member of a class. The data file contains floating point temperatures which are read by a member function of the class and stored in the array.
Why does the member function printList have a const after its name but getList does not?
Fill in the code so that the program reads in the data values from the temperature file and prints them to the screen with the following output:
78.90
87.40
60.80
70.40
75.60
Add code (member function, call and function implementation) to print the average of the numbers to the screen so that the output will look like the output from Exercise 2 plus the following:
The average temperature is 74.62
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