maxq.cpp: In function `int main()': maxq.cpp:9: `n' undeclared (first use this function) maxq.cpp:9: (Each undeclared identifier is reported only once for each function it appears in.) maxq.cpp:10: `i' undeclared (first use this function) maxq.cpp:12: `a' undeclared (first use this function) maxq.cpp:14: `m' undeclared (first use this function) maxq.cpp:17: `op' undeclared (first use this function) maxq.cpp:17: `x' undeclared (first use this function) maxq.cpp:17: `y' undeclared (first use this function)