Compilare: user.cpp: In function ‘bool check(int, int, int)’: user.cpp:41:30: warning: unused variable ‘tp’ [-Wunused-variable] int sum=xdb[x+k][y+k][p],tp=0; ^ user.cpp: In function ‘int main()’: user.cpp:138:9: warning: unused variable ‘k’ [-Wunused-variable] int k; ^ user.cpp: In function ‘bool cmp(adat, adat)’: user.cpp:91:1: warning: control reaches end of non-void function [-Wreturn-type] } ^