Compilare: main.cpp: In function 'int main()': main.cpp:8:9: warning: unused variable 'lat' [-Wunused-variable] int lat,n,l,c,i,a,cer,ca,k,j; ^~~ main.cpp:8:15: warning: unused variable 'l' [-Wunused-variable] int lat,n,l,c,i,a,cer,ca,k,j; ^ main.cpp:47:17: warning: 'ca' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<ca%10;; ^~