View Compilation Error

143579_0_22399.cpp: In function `void jiecheng(int)':
143579_0_22399.cpp:142: error: `chen2' undeclared (first use this function)
143579_0_22399.cpp:142: error: (Each undeclared identifier is reported only once for each function it appears in.)
143579_0_22399.cpp: In function `void chenfang(const int*, int, int*)':
143579_0_22399.cpp:157: error: `chen' undeclared (first use this function)