Compilare: user.cpp: In function ‘void runtime()’: user.cpp:20:17: warning: unused variable ‘ii’ [-Wunused-variable] int ii,jj; ^ user.cpp:20:20: warning: unused variable ‘jj’ [-Wunused-variable] int ii,jj; ^ user.cpp: In function ‘void lee()’: user.cpp:50:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i][j]==nr) ^ user.cpp:38:9: warning: unused variable ‘x’ [-Wunused-variable] int x,y,xx,yy,nr; ^ user.cpp:38:11: warning: unused variable ‘y’ [-Wunused-variable] int x,y,xx,yy,nr; ^