C ++ Basic While循环：未知输入和值增量

Question

So I'm trying to write a program that reads unknown inputs from a data file that has a sentinel 0 or I guess an termination point for the loop.

• Number of integers per line before 0 (int count).
• Number of all integers in data file (int totalcount).
• Number of lines in data file (int lines).

Two examples of unknown inputs from a data file:

• Example One:
  1 2 3 0 4 5 6 7 0
• Example Two:
  0 9 11 -11
  1 1 0 0 2
  0

Here is my program (without "count" because that is where my problem lies):

int main()
{
    //Declaring variables.
    int input, lines, count, totalcount, datafile;
    lines = 0;
    count = 0;
    totalcount = 0;

    //Loop runs as long as data file has an integer to take in.
    while(cin >> datafile)
        {
            //If datafile is not 0, loop runs until datafile is 0.  
            while(datafile != 0)
                {
                    //Counts all integers in the file except 0.
                    totalcount += 1; 
                    cin >> datafile;
                }
            //Counts how many lines there are in a data file using sentinel 0 (not "/n").
            if(datafile == 0)
                lines += 1;  
            //Outputs.
            cout << lines << setw(11) << count << setw(11) << totalcount << endl;
        }
    return 0;
}

Please do not worry about technicality, efficiency, or anything else besides the logic/concept itself as I'm just trying to find the missing link in my knowledge to complete this assignment.

With that said, my expected outputs are as formatted:
"Line #" "Counts of integers per line" "Total counts of all integers in data file"

Using example one with my current code, I would have outputs (spacing is not exact and '.' is for blanks):

1......0......3
2......0......7

Correct expected outputs:

1......3......3
2......4......7

I would like any hints or explanation of how I can count the integers per line (before sentinel 0) and assign that value to "int count" without the value persisting to the next line.

I'm a student in an introductory C++ class so please show me a basic way of how I may go about this first and then any other advanced options as necessary for future applications.

Code of Conduct Personal Statement:
By participating, you are providing necessary knowledge for assignment completion, not completing the assignment itself. The example used is generated by me intended for concept demonstration purposes and is only a small part of the final assignment.

10/23/2016 9:56PM Update 1:
Currently attempting to use a "temp" variable to substract from "totalcount". I will update my code if attempt is successful.

Answer 1

totalcount is sum of counts. This is my suggestion

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
    //Declaring variables.
    int input, lines, count, totalcount, datafile;
    lines = 0;
    count = 0;
    totalcount = 0;

    //Loop runs as long as data file has an integer to take in.
    while(cin >> datafile)
        {
            // Add count to totalcount and reset count each time reach 0
            if (datafile == 0) {
                totalcount += count;
                lines += 1;  

                cout << lines << setw(11) << count << setw(11) << totalcount << endl;
                count = 0;
            } 
            //otherwise increase count
            else {
                count++;
            }

        }
    return 0;
}