c 2b 2b to python code converter

1int main{
2int i, n;
3cin>>n;
4for(i=0; i<n; i++)
5    cin>>a[i];
6 

1#include<bits/stdc++.h>
2#include <iostream>
3
4using namespace std;
5
6
7struct n{
8    int d;
9    struct n*next;
10    };
11
12void push(struct n**headref, int new_d)
13{
14    struct n* new_node=new n;
15    new_node->d=new_d;
16    new_node->next=(*headref);
17    (*headref)=new_node;
18    }
19    
20    float avgofnodes(struct n*head)
21    {
22        if(!head){return -1;}
23        int c=0;
24        int s=0;
25        float avg =0.0;
26        struct n*now=head;
27        while(now!=NULL)
28        {
29            c++;
30            s+=now->d;
31            now=now->next;
32            }
33        avg=(double)s/c;
34        return avg;
35        }
36
37int main()
38{
39struct n*head=NULL;
40push(&head , 7);
41push(&head, 6);
42push(&head, 8);
43push(&head, 4);
44push(&head, 1);
45	cout<<"Average of nodes = "<<avgofnodes(head);
46return 0;	
47}

1#include <iostream>
2
3using namespace std;
4
5int main()
6
7{ int n=4,num-n-1; for(int i=1;i<n;i++) {
8
9for(int j=1;j<=i;j++) cout<<num; cout<<endl;
10
11num++;
12
13}
14
15num-;
16
17for(int i=n;i>=1;i-)
18
19{ for(int j=1;j<=i;j++) cout<<num; num--; cout<<endl;
20
21}
22
23return 0;

1int main{
2int i, n;
3cin>>n;
4for(i=0; i<n; i++)
5    cin>>a[i];