c++ - difference between input using ignore and so on -

i wanted clear doubt regarding function

cin.ignore(1,'\n');    

code:

char x[80];       cin>>x;        cin.ignore(1,'\n');       

if user input word: paul smith
program looks first space in word , ignores/delete rest of characters?
hence program takes paul , discards smith?
right?
i'm getting confused! please explain in simple words because cannot understand explanation on google regarding issue.

cin.ignore(1,'\n'); 

is not useful. ignore 1 character.

cin.ignore(100,'\n'); 

will ignore 100 characters stop after encounters '\n'.

in case,

cin>>x;        

will read paul x. line

cin.ignore(1,'\n'); 

will consume space after paul. hence, smith left on input stream.

hence program takes paul , discards smith?

no. hope clear above.