Compilare: main.cpp: In function 'int main()': main.cpp:20:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 0;i < n; ++i) ^~~ main.cpp:23:8: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' double rez; ^~~~~~ main.cpp:27:21: warning: 'rez' may be used uninitialized in this function [-Wmaybe-uninitialized] out << fabs(rez / 2.0); ~~~~^~~~~