View Compilation Error

0_0_18451466_22923.cpp:16:1: error: expected ',' or ';' before 'const'
 const double eps = 1e-9;
 ^
0_0_18451466_22923.cpp: In function 'int Dcmp(double)':
0_0_18451466_22923.cpp:28:18: error: 'eps' was not declared in this scope
     if(fabs(x) < eps)
                  ^
0_0_18451466_22923.cpp: In function 'int main()':
0_0_18451466_22923.cpp:108:30: error: 'eps' was not declared in this scope
             while(abs(r-l) > eps)
                              ^