View Compilation Error

0_0_1496077_24547.cpp: In function `int sgn(double)':
0_0_1496077_24547.cpp:17: error: `eps' undeclared (first use this function)
0_0_1496077_24547.cpp:17: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1496077_24547.cpp: In function `int main()':
0_0_1496077_24547.cpp:26: error: too few arguments to function `void check(int, int)'
0_0_1496077_24547.cpp:62: error: at this point in file