Compilare: user.cpp: In function ‘int main()’: user.cpp:10:47: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] int x , a=0 , s1=0, s2=0 , k ,k1 , mx=0 , b[100] , h=1 , d; ^ user.cpp:10:62: warning: variable ‘d’ set but not used [-Wunused-but-set-variable] int x , a=0 , s1=0, s2=0 , k ,k1 , mx=0 , b[100] , h=1 , d; ^ user.cpp:28:18: warning: ‘k1’ may be used uninitialized in this function [-Wmaybe-uninitialized] s1=s1+pow(3,k1-1); ~~~^~~~~~~~