View Compilation Error

0_0_1941830_18578.cpp: In function `void BFS()':
0_0_1941830_18578.cpp:29: error: `mathod' undeclared (first use this function)
0_0_1941830_18578.cpp:29: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1941830_18578.cpp: In function `int main()':
0_0_1941830_18578.cpp:76: error: `mathod' undeclared (first use this function)