Compilare: user.cpp: In function ‘int main()’: user.cpp:55:15: warning: variable ‘k1’ set but not used [-Wunused-but-set-variable] int i,k=0,k1,j,t; long long s=0; ^ user.cpp:55:18: warning: unused variable ‘j’ [-Wunused-variable] int i,k=0,k1,j,t; long long s=0; ^ user.cpp: In function ‘int power(int, int)’: user.cpp:50:1: warning: control reaches end of non-void function [-Wreturn-type] } ^