Compilare: user.cpp: In function ‘int main()’: user.cpp:40:19: warning: unused variable ‘col’ [-Wunused-variable] int poz1,poz2,col,row,col2,row2,cul1,cul2; ^ user.cpp:40:23: warning: unused variable ‘row’ [-Wunused-variable] int poz1,poz2,col,row,col2,row2,cul1,cul2; ^ user.cpp:40:27: warning: unused variable ‘col2’ [-Wunused-variable] int poz1,poz2,col,row,col2,row2,cul1,cul2; ^ user.cpp:40:32: warning: unused variable ‘row2’ [-Wunused-variable] int poz1,poz2,col,row,col2,row2,cul1,cul2; ^