View Compilation Error

36444_0_21376.cpp:6: error: expected unqualified-id before '!' token
36444_0_21376.cpp:6: error: expected `,' or `;' before '!' token
36444_0_21376.cpp: In function `int main()':
36444_0_21376.cpp:9: error: `p' undeclared (first use this function)
36444_0_21376.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
36444_0_21376.cpp:9: error: `q' undeclared (first use this function)
36444_0_21376.cpp:34: error: `sum' undeclared (first use this function)
36444_0_21376.cpp:38: error: `ans' undeclared (first use this function)