View Compilation Error

0_0_4486994_23762.cpp: In function `int main()':
0_0_4486994_23762.cpp:67: error: `fangui' undeclared (first use this function)
0_0_4486994_23762.cpp:67: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4486994_23762.cpp:79: error: `ispass' undeclared (first use this function)
0_0_4486994_23762.cpp:84: error: `twoout' undeclared (first use this function)
0_0_4486994_23762.cpp:88: error: `threeout' undeclared (first use this function)
0_0_4486994_23762.cpp:92: error: `fa' undeclared (first use this function)