Create largest-three-elements.cpp

largest-three-elements.cpp

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+//C++ program to find the largest three elements in an array.
+#include<iostream>
+using namespace std;
+
+void three_largest(int arr[], int arr_size)
+  {
+   int i, first, second, third;
+
+    if (arr_size < 3)
+    {
+        cout << "Invalid Input";
+    }
+
+    third = first = second = INT_MIN;
+    for (i = 0; i < arr_size ; i ++)
+    {
+        if (arr[i] > first)
+        {
+            third = second;
+            second = first;
+            first = arr[i];
+        }
+         else if (arr[i] > second)
+        {
+            third = second;
+            second = arr[i];
+        }
+
+        else if (arr[i] > third)
+            third = arr[i];
+    }
+
+      cout << "\nThree largest elements are: " <<first <<", "<< second <<", "<< third;
+}
+int main()
+{
+    int nums[] = {7, 12, 9, 15, 19, 32, 56, 70};
+    int n = sizeof(nums)/sizeof(nums[0]);
+    cout << "Original array: ";
+    for (int i=0; i < n; i++) 
+    cout << nums[i] <<" ";
+   three_largest(nums, n);
+    return 0;
+}