View Compilation Error

0_0_6503889_952.cpp: In function `double check(double)':
0_0_6503889_952.cpp:13: error: invalid types `double[int]' for array subscript
0_0_6503889_952.cpp:13: error: invalid types `double[int]' for array subscript
0_0_6503889_952.cpp: In function `int main()':
0_0_6503889_952.cpp:43: error: `t' undeclared (first use this function)
0_0_6503889_952.cpp:43: error: (Each undeclared identifier is reported only once for each function it appears in.)