View Compilation Error

0_0_12057199_26321.cpp: In function `int main()':
0_0_12057199_26321.cpp:8: error: `CA' undeclared (first use this function)
0_0_12057199_26321.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12057199_26321.cpp:8: error: `CB' undeclared (first use this function)