std::cin.getline() space and new line setting input

Hey there.

What I'm trying to accomplish is simply. A user enters the input '2 1 3 18' (not including the quotes)
and all 4 numbers are put into an array.

This is my code thus far (note variables are set up properly etc the only issue I'm having is saving the input)

Code:

---

for (int i = 0; i < m; ++i){
  counter = 0;

  while (counter < n){
      cin.getline(input, 100, ' \n'); //so either a space or a new line is like pressing enter
      aMatrix[i][counter] = (int)input; //I wanted to put (long double)input; but that doesn't work - any ideas?
      counter++;
  }
}

---

Also running the code line for line, the first time cin.getline() is run I'm unable to enter anything.

Thanks in advance!

Fundamentally, you can't put both a space and a newline inside a char literal. It's one or the other, not both. In order to pass multiple chars the function would need to accept a const char*, which it doesn't.

What you want is to make a single call to getline() in the outer loop, and then read from the result using an istringstream in the inner loop.

I'm not exactly sure what you mean by your comments concerning
"space or enter", but you can also read directly into the variable:

Code:

---

for (int i = 0; i < m; ++i)
{
  counter = 0;

  while (counter < n)
  {
      cin >> aMatrix[i][counter];
      counter++;
  }
}

---

One of the requirements is that all the numbers for each equation are on the same line.