tell cin to stop reading at newline

Question

Suppose I want to read line a of integers from input like this:

1 2 3 4 5\\n

I want cin to stop at \'\\n\' character but cin doesn\'t seem

Answer 1

getchar() is more efficient than cin when working with characters at this situation

I tried to do the same with a line of characters with unknown length and want it to stop at a newline but it has an infinite loop and haven't detect the newline, so I just used getchar() instead of cin and it works