I enter through the door.
Option - as the right to enter or not to enter into a contract - is a discretionary act.
No, "enter" is usually followed by the preposition "into" when used in a sentence. For example, "She entered into the room."
The civilians tried to enter the armed forces
She invited us to enter with a graceful movement of her arm.
Ex: He/She tried to, but he/she couldn't (ENTER WORD) it.
He tried to inconspicuously enter the building that he had been banned from.
I was declined access to the VIP area because I did not have permission to enter.
When you type in a word processing program, the characters you enter are always deletable.
They could enter the building provided that they had their security clearance cards with them.
Until he masters the rudiments of chess, I wouldn't recommend that he enter the tournament.
Yes, the sentence is correct. The implied subject of the sentence is you."You come...""You enter..."
Use the C++ getline() function from the standard library.