View Compilation Error

0_0_6621109_13849.cpp:7: error: size of array `f' is too large
0_0_6621109_13849.cpp:8: error: size of array `sum' is too large
0_0_6621109_13849.cpp: In function `int main()':
0_0_6621109_13849.cpp:11: error: `f' undeclared (first use this function)
0_0_6621109_13849.cpp:11: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6621109_13849.cpp:13: error: `sum' undeclared (first use this function)