PLEASE help me figure out this homework problem!

//Provided code template:

#include #include #include #include #include #include #include

#ifdef __cplusplus extern "C" { #endif void generatePrefixSumData (int* arr, size_t n); void checkPrefixSumResult (int* arr, size_t n); #ifdef __cplusplus } #endif

int main (int argc, char* argv[]) { //forces openmp to create the threads beforehand #pragma omp parallel { int fd = open (argv[0], O_RDONLY); if (fd != -1) { close (fd); } else { std::cerr "

int n = atoi(argv[1]);

int * arr = new int [n]; generatePrefixSumData (arr, n);

int * pr = new int [n+1];

//insert prefix sum code here

checkPrefixSumResult(pr, n);

delete[] arr;

return 0; }

Here is a sequential Prefix Sum: void prefixsum (int* arr, int n, int* pr) f pr [0] = 0; for (int i-0; i