Compilare: main.cpp: In function 'int main()': main.cpp:15:8: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=0;j<n;j++) ^~~ main.cpp:18:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout<<'\n'; ^~~~