Compilare: user.cpp: In function ‘int main()’: user.cpp:19:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i = 2; i <= N; i++) ^~~ user.cpp:22:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(int i = 0 ; i < N; i++) ^~~