Compilare: main.cpp: In function 'int upper_bound(int)': main.cpp:32:9: warning: variable 'aux' set but not used [-Wunused-but-set-variable] 32 | int aux; | ^~~ main.cpp:44:1: warning: no return statement in function returning non-void [-Wreturn-type] 44 | } | ^ main.cpp: In function 'int lower_bound(int)': main.cpp:26:12: warning: 'aux' may be used uninitialized [-Wmaybe-uninitialized] 26 | return aux; | ^~~ main.cpp:15:9: note: 'aux' was declared here 15 | int aux; | ^~~ main.cpp: In function 'int main()': main.cpp:60:19: warning: 'aux' may be used uninitialized [-Wmaybe-uninitialized] 60 | if(v[x]!=b) w[i]=-1; | ~~~^ main.cpp:15:9: note: 'aux' was declared here 15 | int aux; | ^~~