#include #include #include

// (a) Begin the definition of a function called get_array_product // which computes the product of the finite elements of an array // of double precision floating point values. // // Parameters: // items - an array of double precision floating point values. // num_items - an int which specifies the maximum number of items // to process. // // Returns: // A double precision floating point value: // * If the array contains at least one finite element: the result // is equal to the product of the finite elements. // * Otherwise: return NAN.

INSERT RESULT TYPE, NAME, AND PARAMETERS HERE { // (b) Insert logic required to solve the problem here. }

void run_test(const char * label, double x[], int count) { double prod = get_array_product(x, count); printf("%s ", label); printf("\tInput data: ");

for (int i = 0; i < count; i++) { printf("\t%d\t%f ", i, x[i]); }

printf("\tProduct = %f ", prod); }

int main(void) { double x1[] = { 0 }; run_test("Count == 0", x1, 0);

double x2[] = { NAN, +INFINITY, -INFINITY }; run_test("No finite values", x2, 3);

double x3[] = { 1, 2, 3, 4, 5, 6, 7 }; run_test("Several finite values", x3, 7);

double x4[] = { 2, M_PI, NAN, 3, INFINITY, 4 }; run_test("A mix of finite values and infinities", x4, 6);

double x5[] = { 1 }; run_test("Product is 1", x5, 1);

double x6[] = { 1.0, NAN, 1.0, 1.0, INFINITY }; run_test("Product is also 1", x6, 5);

return 0; }