Compilare: user.cpp: In function ‘int vischeck(int, int)’: user.cpp:11:10: warning: unused variable ‘hprev’ [-Wunused-variable] int h, hprev; ^ user.cpp:12:17: warning: unused variable ‘catprev’ [-Wunused-variable] float a, cat, catprev; ^ user.cpp: In function ‘int main()’: user.cpp:69:16: warning: ‘sumvis’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<sumvis-1; ^