View Compilation Error

0_0_20515018_1459.cpp: In function 'int main()':
0_0_20515018_1459.cpp:33:16: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
    int j=next[i];
                ^
0_0_20515018_1459.cpp:35:13: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
     j=next[j];
             ^
0_0_20515018_1459.cpp:36:12: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
    next[i+1]=(s[i]==s[j])?j+1:0;
            ^
0_0_20515018_1459.cpp:42:13: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
     j=next[j];
             ^