Compilare: main.cpp: In function 'int upper_b(int, int, int)': main.cpp:57:13: warning: variable 'ans' set but not used [-Wunused-but-set-variable] 57 | int mij,ans; | ^~~ main.cpp:70:1: warning: no return statement in function returning non-void [-Wreturn-type] 70 | } | ^ main.cpp: In function 'int main()': main.cpp:74:19: warning: unused variable 'j' [-Wunused-variable] 74 | int cer,q,n,i,j; | ^ main.cpp: In function 'int lower_b2(int, int, int)': main.cpp:52:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] 52 | return ans; | ^~~ main.cpp: In function 'int main()': main.cpp:86:33: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] 86 | fout<<lower_b2(x,1,n); | ^