Which among the following mathematical function do not have a 'double'

1.	Which among the following mathematical function do not have a 'double' return-type?
A.	srand(x);
B.	ceil(x);
C.	floor(x);
D.	both ceil(x); and floor(x);
Answer» B. ceil(x);

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Which among the following mathematical function do not have a 'double' return-type?

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