Formula required to get highest value from a range

[hsandeep]

Input Range:C2:M2
By default C2:M2 is either 0 or “” (null)
Else positive integer

Formula required in A2: HIGHEST value from C2:M2
If ALL values in C2:M2=0, negative (less than 0) or null, A2 should be “” (null)
How to accomplish?
Thanks very much for your time given & help in advance.

	A	B	C	D	E	F	G	H	I	J	K	L	M
2	100		12	1	25	11	2	15	18	17	18	100	7

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[Scott T]

=if(max(c2:m2)<=0,"",max(c2:m2))