When initializing 'float', what is the difference between converting to 'float' and adding 'f' as a suffix?

problem ：

What is the difference between What's the difference?

float f = (float) 99.32 ;

and and

float f = 99.32f ;

Both of them compiled and ran successfully. They all compiled successfully and ran successfully .

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Solution ：

Reference resources ： https://stackoom.com/en/question/2F9PY