View Compilation Error

289949_0_3716.cpp: In function `int main()':
289949_0_3716.cpp:22: error: `s' undeclared (first use this function)
289949_0_3716.cpp:22: error: (Each undeclared identifier is reported only once for each function it appears in.)
289949_0_3716.cpp:23: error: `q' undeclared (first use this function)