View Compilation Error

0_0_7636689_9188.cpp: In function `int main()':
0_0_7636689_9188.cpp:49: error: `fp' undeclared (first use this function)
0_0_7636689_9188.cpp:49: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7636689_9188.cpp:50: error: `test_case' undeclared (first use this function)