Compilare: main.cpp: In function 'int main()': main.cpp:34:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(fr[b]==0) ^~ main.cpp:36:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' fout<<v[b]-v[a]<<"\n"; ^~~~