auto in c 2b 2b

1#include <iostream>
2using namespace std;
3int main(){
4   //Pointer declaration
5   int *p, var=101;
6 
7   //Assignment
8   p = &var;
9
10   cout<<"Address of var: "<<&var<<endl;
11   cout<<"Address of var: "<<p<<endl;
12   cout<<"Address of p: "<<&p<<endl;
13   cout<<"Value of var: "<<*p;
14   return 0;
15}

1int foo = 0;
2auto bar = foo;  // the same as: int bar = foo; 
3// type of bar is the type of the value used to initialize it

1#include<iostream>
2#incllude<vector>
3using namespace std;
4
5int main() {
6   vector<int> vec(10);       // Auto deduce type to be iterator of a vector of ints.
7   for(auto it = vec.begin(); it != vec.end(); vec ++)
8   {
9      cin >> *it;
10   }
11   return 0;
12}