Thread: Is there a way to get user input (maybe using getchar()) without erasing the buffer?

So i need to allow the user to input numbers of a matrix one line at a time, and if they input $ it means the matrix is completed and they want to move on, so i wrote this but having to look if the user has inputed $ using getchar() eats the first digit of each number. Is there a way for getchar to not erase the character it gets from the buffer? i also take other suggestions, thanks.

Code:

for (int dato = 0; dato < 400; dato++) {
  scanf("%i", &Matriz1[fila][dato]);
  if (getchar() == '\n') {
    fila++;
  }
  if (getchar() == '$') {
    break;
  }
}