View Compilation Error

0_0_16263578_23071.cpp: In function 'int main()':
0_0_16263578_23071.cpp:24:20: error: conflicting declaration 'int j [100]'
  int n,p[100],j[100];
                    ^
0_0_16263578_23071.cpp:23:8: note: previous declaration as 'int j'
  int i,j,sum;
        ^
0_0_16263578_23071.cpp:35:6: error: invalid types 'int[int]' for array subscript
   j[i]=caculate(p[i]);
      ^
0_0_16263578_23071.cpp:36:13: error: invalid types 'int[int]' for array subscript
     sum+=j[i];
             ^