View Compilation Error

0_0_19149576_31441.cpp: In function 'int main(int, char**)':
0_0_19149576_31441.cpp:58:32: error: 'update' was not declared in this scope
    update(1, n, 1, node[i].left);
                                ^
0_0_19149576_31441.cpp:60:32: error: 'update' was not declared in this scope
    update(1, n, 1, node[i].left);
                                ^