Compilare: user.cpp: In function ‘int main()’: user.cpp:89:19: warning: unused variable ‘x’ [-Wunused-variable] int tip , x , y ,r; ^ user.cpp:89:23: warning: unused variable ‘y’ [-Wunused-variable] int tip , x , y ,r; ^ user.cpp:89:26: warning: unused variable ‘r’ [-Wunused-variable] int tip , x , y ,r; ^ user.cpp: In function ‘bool ok(buba, buba)’: user.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:83:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuiburi.in","r",stdin); ^ user.cpp:84:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuiburi.out","w",stdout); ^ user.cpp:86:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:90:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tip); ^ user.cpp:92:73: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &a[i].l0, &a[i].c0, &a[i].l1, &a[i].c1); ^ user.cpp:94:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &a[i].l0, &a[i].c0 , &a[i].r); ^