Java

In managing a library's reading room, the fan speed is automatically determined according to the outside temperature and the number of visitors present in the room. The code to manage the fan settings is provided to you, but it does contain a mistake. Find the mistake and fix the program.

if $($temperature $>25)$;

$\{$

if $($visitors $<10)\{$

fanSpeed $=1$;

$\}$

else if $($visitors $<20)\{$

fanSpeed $=2$;

$\}$

else if $($visitors $<25)\{$

fanSpeed $=3$;

$\}$

else if $($visitors $<30)\{$

fanSpeed $=4$;

$\}$

else if $\{$

fanSpeed $=5$;

$\}$

$\}$