View Compilation Error

0_0_8648599_20991.cpp: In function `bool check()':
0_0_8648599_20991.cpp:22: error: `x' undeclared (first use this function)
0_0_8648599_20991.cpp:22: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8648599_20991.cpp:22: error: `y' undeclared (first use this function)
0_0_8648599_20991.cpp: In function `void buildmap(int, int, int, int, int)':
0_0_8648599_20991.cpp:21: error: too many arguments to function `bool check()'
0_0_8648599_20991.cpp:31: error: at this point in file
0_0_8648599_20991.cpp: In function `void bfs()':
0_0_8648599_20991.cpp:60: error: conversion from `void' to non-scalar type `point' requested