Fixed Linear Search

Linear Search was returning key instead of index. Fixed it.
Changed array from size 10 to variable sized.
Same changes like the linear search in different directory.

Linear Search.cpp

@@ -1,13 +1,13 @@
 #include<iostream>
 using namespace std;
 
-int LinearSearch(int *array, int key)
+int LinearSearch(int *array, int size, int key)
 {
-	for (int i = 0; i < 10; ++i)
+	for (int i = 0; i < size; ++i)
 	{
 		if (array[i]==key)
 		{
-			return key;
+			return i;
 		}
 	}
 
@@ -17,19 +17,24 @@ int LinearSearch(int *array, int key)
 
 int main()
 {
-	int array[10];
+	int size;
+	cout<<"\nEnter the size of the Array : ";
+	cin >> size;
+	
+	int array[size];
 	int key;
 
 	//Input array
-	cout<<"\nEnter the Array of 10 numbers : ";
-	for (int i = 0; i < 10; i++)
+	cout<<"\nEnter the Array of " << size << " numbers : ";
+	for (int i = 0; i < size; i++)
 	{
 		cin>>array[i];
 	}
+	
 	cout<<"\nEnter the number to be searched : ";
 	cin>>key;
 
-	int index=LinearSearch(array, key);
+	int index=LinearSearch(array, size, key);
 	if (index!=-1)
 	{
 		cout<<"\nNumber found at index : "<<index;