View Compilation Error

0_0_20460549_20517.cpp: In function 'int main()':
0_0_20460549_20517.cpp:14:25: error: invalid types 'int [100][double]' for array subscript
         scanf("%lf",&a[j]);
                         ^
0_0_20460549_20517.cpp:20:22: error: invalid types 'int [100][double]' for array subscript
                if(a[k]>a[l])
                      ^
0_0_20460549_20517.cpp:20:27: error: invalid types 'int [100][double]' for array subscript
                if(a[k]>a[l])
                           ^