How to identify a new line in C++?

Question

I have to take integer input to an integer array. I have to identify the newline also in input. To be more clear, I have an example. The input I am giving is:-

2         


        

Answer 1

int array[42];
int* ptr = array;
for (string line; getline(cin, line); ) {
    istringstream stream(line);
    stream >> *ptr++;
}

Error checking elided.