Compilare: main.cpp: In function 'void setup()': main.cpp:30:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^ main.cpp: In function 'void intreb()': main.cpp:49:16: warning: unused variable 'i' [-Wunused-variable] long long i,s; ^ main.cpp: In function 'long long int cautarebin(long long int, long long int, long long int)': main.cpp:25:12: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] return sol; ^~~ main.cpp: In function 'void intreb()': main.cpp:61:23: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] s+=(itr-1)*(n1-k); ~~~^~~