From 5eb4931002d564d6f07e110dc2f7be064755d322 Mon Sep 17 00:00:00 2001
From: Matthew Ellison <m_ellison@ymail.com>
Date: Sun, 10 Mar 2019 18:39:51 -0400
Subject: [PATCH] Added getSum and getProd functions

---
 DynamicInt64Array.h     | 24 ++++++++++++++++++++++++
 testDynamicInt64Array.c | 24 ++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/DynamicInt64Array.h b/DynamicInt64Array.h
index 51c5f21..92fbe17 100644
--- a/DynamicInt64Array.h
+++ b/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
diff --git a/testDynamicInt64Array.c b/testDynamicInt64Array.c
index bd34ef6..1bf84af 100644
--- a/testDynamicInt64Array.c
+++ b/testDynamicInt64Array.c
@@ -154,6 +154,30 @@ int main(){
 		return 1;
 	}
 
+	//Test the getProd function
+	if(getSumDynamicInt64Array(&testAry) == 21){
+		printf("getSum is working correctly\n");
+	}
+	else{
+		printf("There is something wrong with getSum\nThe sum returned is %d\nThe sum should be %d", getSumDynamicInt64Array(&testAry), 21);
+		return 1;
+	}
+
+	//Test the getSum function
+	if(getProdDynamicInt64Array(&testAry) != 0){
+		printf("There is something wrong with getProd\nThe product returned is %d\nThe product should be%d", getProdDynamicInt64Array(&testAry), 0);
+		return 1;
+	}
+	//Pop off the first 0 so there will be a number in the product
+	removeDynamicInt64Array(&testAry, 0);
+	if(getProdDynamicInt64Array(&testAry) == 720){
+		printf("getProd is working correctly\n");
+	}
+	else{
+		printf("There is something wrong with getProd\nThe product returned is %d\nThe product should be%d", getProdDynamicInt64Array(&testAry), 720);
+		return 1;
+	}
+
 	//Release all of the memory allocated by the array
 	destroyDynamicInt64Array(&testAry);