If statement

Assume cell A1 is a number to one decimal place but will never be negative. I need a code for cell B1 that will report the number in cell A1 with the text "FT" after it unless the number in A1 is 0 in which case B1 will report "N/A"

So if A1 is "7.2" B1 will read "7.2FT" but if A1 is "0" B1 will read "N/A"

Any help would be greatly appreciated.