Compilare: user.cpp: In function ‘int floyd()’: user.cpp:44:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void check()’: user.cpp:48:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i=1; i<=n; i++) ^~~ user.cpp:52:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ g<<"DA"<<endl; ^