added one 1d arrays in cpp

Author: GauravWalia19

Diff for: C++/Data-Structures/ARRAYS/.gitignore

@@ -0,0 +1,5 @@
+# IGNORE FILES FOR C++
+
+*.o
+*.out
+*.exe

Diff for: C++/Data-Structures/ARRAYS/1darrays.cpp

@@ -0,0 +1,29 @@
+/*
+ *  1 Dimensional Array
+ */
+#include <iostream>
+using namespace std;
+int main()
+{
+    int n; //size of the array
+    cout << "Enter the size of the array" << endl;
+    cin >> n;
+    int arr[n]; //decalared 1d array of size n
+    cout << "Enter the elements of the array" << endl;
+    for(int i=0;i<n;i++)
+    {
+        cin >> arr[i];
+    }
+    cout << "Entered array:" <<endl;
+    for(int i=0;i<n;i++)
+    {
+        if(i==n-1)
+        {
+            cout << arr[i] << endl;    
+        }
+        else
+        {
+            cout << arr[i]<<" ";
+        }
+    }
+}