View Compilation Error

0_0_20190619_13722.cpp:4:13: error: size of array 'a' has non-integral type 'double'
 int a[MAXLEN],ans[MAXLEN];
             ^
0_0_20190619_13722.cpp:4:25: error: size of array 'ans' has non-integral type 'double'
 int a[MAXLEN],ans[MAXLEN];
                         ^
0_0_20190619_13722.cpp:5:17: error: size of array 'flag' has non-integral type 'double'
 bool flag[MAXLEN];
                 ^