View Compilation Error

0_0_31398297_19593.cpp: In function 'int main()':
0_0_31398297_19593.cpp:17:21: error: invalid types 'int [1000][double]' for array subscript
     scanf("%lf",&a[n]);
                     ^
0_0_31398297_19593.cpp:18:11: error: invalid types 'int [1000][double]' for array subscript
     f+=a[n];
           ^
0_0_31398297_19593.cpp:19:11: error: invalid types 'int [1000][double]' for array subscript
     if(a[n]>d){
           ^
0_0_31398297_19593.cpp:20:11: error: invalid types 'int [1000][double]' for array subscript
      d=a[n];
           ^
0_0_31398297_19593.cpp:22:11: error: invalid types 'int [1000][double]' for array subscript
     if(a[n]<x){
           ^
0_0_31398297_19593.cpp:23:11: error: invalid types 'int [1000][double]' for array subscript
      x=a[n];
           ^