Jack died
Titanic Grand Staircase
Nobody - Jack dies.
In Titanic Jack Dawson ( Leonardo DiCaprio) does die at the end.
Rose marries some guy named Calbert. Jack died in the end so she couldn't possibly marry him. And she didnt get pregnant with jack
Jack wants Rose to survive and he exhorts her to swear that she will. He instructed her to "never let go" referring to her promise to survive.
Jack died in the ocean and rose died in her bed at the end
He did not die on the titanic but later died in the crash of 29 he put a pistol in his mouth if you whatch the movie rose says it at the end
Jack died when him and rose were in the water since the water was soo cold he froze.
Cal (Rose's fiance) wanted to give Jack $20,but Rose wanted to give Jack something more,so in the end Cal invited Jack to dinner with him,Rose,and their first-class aquaintinces,this was a big deal since Jack was in steerage.
Unfortunately, there is no real answer to this. James Cameron said that he left it up to the viewers to decide.
Carpathia
No, Jack does not survive or come back from the dead in the 1997 film Titanic. A fan created a fake trailer for a nonexistent movie called Titanic 2: The Surface, in which Jack is discovered 100 years later, frozen and unconscious but still alive, and is thawed out to live in the future. But this is not part of the official storyline for the film.