auto i cpp

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}

1auto n=1;
2// this will make the type int, and you can't change trough the program;
3cout << n;
4// OR
5auto n="how you doin'";
6cout << n;