Read from file in c++ till end of line?

Question

How can i read data untill end of line?I have a text file "file.txt" with this

1 5 9 2 59 4 6
2 1 2 
3 2 30 1 55

I have this code:

ifstream file("file.txt",ios::in);
while(!file.eof())
{
    ....//my functions(1)
    while(?????)//Here i want to write :while (!end of file)
    {
        ...//my functions(2)
    }

}

in my functions(2) i use the data from the lines and it need to be Int ,not char

Answer 1

Don't use while(!file.eof()) as eof() will only be set after reading the end of the file. It does not indicate, that the next read will be the end of the file. You can use while(getline(...)) instead and combine with istringstream to read numbers.

#include <fstream>
#include <sstream>
using namespace std;

// ... ...
ifstream file("file.txt",ios::in);
if (file.good())
{
    string str;
    while(getline(file, str)) 
    {
        istringstream ss(str);
        int num;
        while(ss >> num)
        {
            // ... you now get a number ...
        }
    }
}

You need to read Why is iostream::eof inside a loop condition considered wrong?.