Compilare: main.cpp: In function 'int main()': main.cpp:25:9: warning: variable 'bigi' set but not used [-Wunused-but-set-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~~ main.cpp:25:18: warning: variable 'bigj' set but not used [-Wunused-but-set-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~~ main.cpp:25:27: warning: variable 'bis' set but not used [-Wunused-but-set-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~ main.cpp:25:34: warning: variable 'bjs' set but not used [-Wunused-but-set-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~