Compilare: user.cpp: In function ‘coada check(int, int, int (*)[21], int)’: user.cpp:33:9: warning: variable ‘t’ set but not used [-Wunused-but-set-variable] int t=0,h=0,i,j; ^ user.cpp:33:17: warning: unused variable ‘i’ [-Wunused-variable] int t=0,h=0,i,j; ^ user.cpp:33:19: warning: unused variable ‘j’ [-Wunused-variable] int t=0,h=0,i,j; ^ user.cpp: In function ‘int main()’: user.cpp:72:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y; ^