floating point - Is there a function to round a float in C or do I need to write my own?

Question

Is there a function to round a float in C or do I need to write my own?

float conver = 45.592346543;

I would like to round the actual value to one decimal place, conver = 45.6.

Answer 1

Sure, you can use roundf(). If you want to round to one decimal, then you could do something like: roundf(10 * x) / 10