View Compilation Error

0_0_37099343_25360.cpp: In function 'int main()':
0_0_37099343_25360.cpp:11:16: error: 'b' was not declared in this scope
    double k0 = b/a,k1=(b+1)/a-eps;
                ^
0_0_37099343_25360.cpp:11:18: error: 'a' was not declared in this scope
    double k0 = b/a,k1=(b+1)/a-eps;
                  ^
0_0_37099343_25360.cpp:14:12: error: 'k1' was not declared in this scope
    if(cnt<=k1&&cnt>=k0)flag = 1;
            ^
0_0_37099343_25360.cpp:17:17: error: 'k1' was not declared in this scope
     while(r+eps<k1){
                 ^
0_0_37099343_25360.cpp:20:21: error: 'k1' was not declared in this scope
     if(cnt>=k0&&cnt<k1){
                     ^