The grammar is ambiguous. Some sentences with ambiguous derivation: c c s e s, c c c s e s, c c s e c s, c c s e c s e s.
Some sentences generated by this grammar: {s, c s, c c s, c c c s, c s e s, c s e c s, c c s e s, c c c s e s, c s e c c s, c c s e c s, c c s e s e s, c s e c s e s, c c s e c s e s, c c c s e s e s, c s e c c s e s}
All nonterminals are reachable and realizable.
The nullable nonterminals are: C.
The endable nonterminals are: CS.
No cycles.
nonterminal
first set
follow set
nullable
endable
S
sc
e$
no
yes
C
e
e$
yes
yes
The grammar is not LL(1) because:
C is nullable with clashing first and follow sets.