View Compilation Error

0_0_3933183_30212.cpp: In function `int main()':
0_0_3933183_30212.cpp:22: error: `ans1' undeclared (first use this function)
0_0_3933183_30212.cpp:22: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3933183_30212.cpp:22: error: `ans2' undeclared (first use this function)