Added getSum and getProd functions

DynamicInt64Array.h

@@ -298,4 +298,28 @@ bool isSortedDynamicInt64Array(struct DynamicInt64Array* ary){
 	return true;
 }
 
+//This function returns the sum of all elements in a DynamicInt64Array
+int64_t getSumDynamicInt64Array(struct DynamicInt64Array* ary){
+	int64_t sum = 0;
+	//Look through every element in the array, adding the numbers to a running sum
+	for(uint64_t location = 0;location < ary->size;++location){
+		sum += ary->ptr[location];
+	}
+
+	//Return the sum
+	return sum;
+}
+
+//This function returns the product of all elements in a DynamicInt64Array
+int64_t getProdDynamicInt64Array(struct DynamicInt64Array* ary){
+	int64_t product = 1;
+	//Look through every element in the array, multiplying it 
+	for(uint64_t location = 0;location < ary->size;++location){
+		product *= ary->ptr[location];
+	}
+
+	//Return the product
+	return product;
+}
+
 #endif //DYNAMIC_ARRAY_H