View Compilation Error

0_0_8868920_10285.cpp:13: error: expected constructor, destructor, or type conversion before "void"
0_0_8868920_10285.cpp:13: error: expected `,' or `;' before "void"
0_0_8868920_10285.cpp: In function `int bfs(int, int)':
0_0_8868920_10285.cpp:40: error: `tochar' undeclared (first use this function)
0_0_8868920_10285.cpp:40: error: (Each undeclared identifier is reported only once for each function it appears in.)