Compilare: main.cpp: In function 'int main()': main.cpp:36:8: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (int j=1;j<i;j++) ^~~ main.cpp:38:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout<<fixed<<setprecision(6)<<S<<"\n"; ^~~~