Compilare: In function 'int inv(int)', inlined from 'int catalan(int)' at main.cpp:30:47: main.cpp:18:18: warning: 'f2' may be used uninitialized [-Wmaybe-uninitialized] 18 | return logpow(x, MODULO - 2); | ~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int catalan(int)': main.cpp:23:12: note: 'f2' was declared here 23 | int f1,f2; | ^~ In function 'int inv(int)', inlined from 'int catalan(int)' at main.cpp:30:27: main.cpp:18:18: warning: 'f1' may be used uninitialized [-Wmaybe-uninitialized] 18 | return logpow(x, MODULO - 2); | ~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int catalan(int)': main.cpp:23:9: note: 'f1' was declared here 23 | int f1,f2; | ^~