implementation of max heap in c++

Data Structures/Heap/CPP/max_heap.cpp

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+
+//BUILDING MAX HEAP USING UPADJUSTMENT
+
+#include<bits/stdc++.h>
+using namespace std;
+int main()
+{
+    int h[20];
+    int n=0,largest=1;
+     int val,i=1,j=1,parent,temp;
+        int ans=0;
+        do
+        {
+            cout<<"\nEnter the node:";
+            cin>>val;
+
+            //UPADJUSTMENT: sorting while adding
+
+            h[i]=val;
+            j=i; //current node
+            parent=j/2;  //parent node of the current node
+            while(parent>=1) 
+            {
+              if(h[parent]<h[j])    //checking whether current node is greater than its parent
+                {                   /*if yes then swap current with its parent node
+				                    as in max heap parent node is always  greater than child node */  
+                   temp=h[parent];
+                   h[parent]=h[j];
+                   h[j]=temp;
+                }
+              j=j/2;  //repeat if parent is not root node till you reach root node 
+             parent=j/2;  
+            }//end while;
+            i++;
+           cout<<"\nDo you want to add more nodes?(yes-1,no-0)";
+           cin>> ans;
+        }while(ans==1);   
+        n=i-1;
+        h[0]=n;
+
+       //Displaying the max heap.
+
+         int k=1;
+       cout<<"The heap is as: ";
+        for(k=1;k<=n;k++)
+        {
+           cout<<" "<<h[k];
+        }
+}
+