Question

Write a program that takes its input from a file of numbers of type double

and outputs the average of the numbers in the file to the screen. The file

contains nothing but numbers of type double separated by blanks and/or

line breaks. If this is being done as a class assignment, obtain the file name

from your instructor

C++

Answer 1

INPUT FILE:

1.2 3.4 5.6 7.8
1 2 3 4
1.2

CODE

#include <iostream>

#include <fstream>

using namespace std;

int main () {

string filename;

double number, total = 0;

int count = 0;

cout << "Enter file name: ";

cin >> filename;

fstream fin(filename, fstream::in);

while (fin >> number) {

total += number;

count++;

}

cout << "Average = " << total / count;

return 0;

}

/*OUTPUT

Enter file name: numbers.txt

Average = 3.24444

*/

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