View Compilation Error

0_0_13052957_32467.cpp: In function `int main()':
0_0_13052957_32467.cpp:220: error: `reach' undeclared (first use this function)
0_0_13052957_32467.cpp:220: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_13052957_32467.cpp:222: error: expected primary-expression before "bool"
0_0_13052957_32467.cpp:222: error: expected `:' before "bool"
0_0_13052957_32467.cpp:222: error: expected primary-expression before "bool"
0_0_13052957_32467.cpp:222: error: expected `;' before "bool"
0_0_13052957_32467.cpp:228: error: `flag' undeclared (first use this function)