Need help reading from a file until end of line - c++

Question

I'm working on a a project for my class where I have to use all four algorithms for the maximum subarray sub problem (cubic, quadratic, linear, and recursive). My problem is that I'm supposed to read the input from a file and I'm having trouble figuring out how to read until the end of a line, execute code with that data, and then move onto the next line. The input file looks like this:
2
-5 -10 -2 -4
2
-2 10 -5 -6
3
-10 -5 0 5 -20 20 -50
4
10 8 2 -20 -50 -100 -150
0
-1 -2 -3 -4 -5
1
-100 -200 0
4
200 500 -700 1000 2000 -5000 4 10
4
100 200
6
0 0 0 0 0 0 -10
5
-4 10 -3 200 500 -700 2
0
5 10 15 20 25 30 35
2
10 30 50 70 100
3
-15 16 23 -30 0 -2 13 8 6 0 -4 -15
12
9 8 23 -1 -23 -4 0 0 4 7 9 10 -23 68 1 -2 -3 -6 -19 10 5 1 1 2 4 3 -46 12 -100 78 -23 0 0 12 2 7
5
-1 -3 0 2 3 6 1 -5 -3 -2
now my issue is that I want to be able to read in a single number (the minimum subarray length) and then fill the array with the row of numbers below it, then execute all four algorithms using that data, then I want to move on to the next minimum subarray length and the next array of values below it, execute all four algorithms etc., and I want to be able to do this all in one go.
For example, I want to read 2 as the minimum subarray length, then use (-5,-10,-2,-4) as the array, execute all four algorithms, then use 2 as the minimum length, (-5,10,-5,-6) as the array, execute all four algorithms, and keep doing that until the end of the file.

Answer 1

Here is a quick possible solution that might help ("test.txt" contains your values...)
#include <fstream>
#include <iostream>
#include <sstream>
#include <vector>
using namespace std;
int main()
{
ifstream in("test.txt");
string str;
int value;
while (in)
{
vector<int> vec;
getline(in, str);
stringstream stream(str);
while (stream)
{
stream >> value;
vec.push_back(value);
}
vec.erase(vec.end()-1);
//Here the vec conntains all values of the current line
for (auto v : vec)
cout << v << " ";
cout << endl;
}
}