Compilare: main.cpp: In function 'int main()': main.cpp:22:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1; i<=n; i++) ^~~ main.cpp:33:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' out<<lp<<" "<<np<<'\n'; ^~~ main.cpp:33:27: warning: 'np' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<lp<<" "<<np<<'\n'; ^~~~