Question

Write a program( using only and ) that reads in a datafile of an unknown quantity of integers, and prints out the following information: The number of values in the dataset The maximum value The minimum value The average of the values

Note: Please only answer this if your using ONLY #include and #include . DO NOT USE ANY OTHERS! only using c++

Answer 1

#include <iostream>
#include <fstream>

using namespace std;

int main() {
    char fileName[100];
    cout << "Enter file name: ";
    cin >> fileName;
    ifstream in(fileName);
    if (in.is_open()) {
        int min = 0, max = 0, avg = 0, count = 0, num;
        while (in >> num) {
            if (count == 0) {
                min = num;
                max = num;
            }
            ++count;
            if (num > max) max = num;
            if (num < min) min = num;
            avg += num;
        }
        cout << "Minimum number is " << min << endl;
        cout << "Maximum number is " << max << endl;
        cout << "Count is " << count << endl;
        cout << "Average is " << avg/(double)count << endl;
        in.close();
    } else {
        cout << fileName << " does not exists!" << endl;
    }
    return 0;
}