View Compilation Error

254719_0_8434.cpp: In function `int main()':
254719_0_8434.cpp:17: error: `s' undeclared (first use this function)
254719_0_8434.cpp:17: error: (Each undeclared identifier is reported only once for each function it appears in.)
254719_0_8434.cpp:19: error: `p' undeclared (first use this function)