View Compilation Error

0_0_12892232_2356.cpp: In function `void IDAstar(int*, int, int)':
0_0_12892232_2356.cpp:69: error: `dfs' undeclared (first use this function)
0_0_12892232_2356.cpp:69: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12892232_2356.cpp: In function `int main()':
0_0_12892232_2356.cpp:82: error: `dfs' undeclared (first use this function)