Compilare: main.cpp: In function 'int main()': main.cpp:9:11: warning: unused variable 'j' [-Wunused-variable] int n,j,nr,h,i,sol,a,ok; ^ main.cpp:9:16: warning: unused variable 'h' [-Wunused-variable] int n,j,nr,h,i,sol,a,ok; ^ main.cpp:18:17: warning: 'ok' may be used uninitialized in this function [-Wmaybe-uninitialized] ok++; ^ main.cpp:15:11: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] nr|=a; ~~^~~