Question: Hi guys i am new to c++, I just wrote this code to find min/max of a array of numbers.  

I just want to know how can I make the no. of entries flexible(I mean the user should be able to enter as many entries as possible without specifying how many in the starting)

Here's the code, but its not working, can someone please help?
Thanks
code:

```
#include <iostream>
using namespace std;
int main(){

    cout<<"Program to calculate max/min/second max\n";
    int *A;
    A=new int[5];
    bool flag=false;
    int x=0,i=0;
    cout<<"Enter the numbers\n";

    do{

        cin>>x;
        if(x=='\0'){
            flag=true;
        }
        *(A+i)=x;
        i++;

    }
    while(!flag);

    for(int j=0;j<i;j++){

        cout<<*(A+j)<<"\n";

    }

    return 0;
}

```

Answer: 
Dynamic Memory Allocation is a bit of a tricky subject for a beginning programmer (in C and C++ in any case.) The easiest way is to have the user specify how many entries, but you don't want this.

Otherwise using the vector class over an array is probably a better (and easier to grapple with than directly using pointers.)

<http://www.cplusplus.com/reference/stl/vector/> is a good place to start. Look at the syntax for creating the vector and the `push_back()` member function to accomplish your task.

Good Luck,

SegFaults McGee
> 
> mean the user should be able to enter as many entries as possible without specifying how many in the starting
> 
> 
> 

With the above requirement and with the code you have, you can enter no more than 5 elements to an array.

```
do{ 
    cin>>x;
    if(x=='\0'){
       flag=true;
    }
    *(A+i)=x;
    i++;
}while(!flag);

```

Use [`std::vector`](http://www.cplusplus.com/reference/stl/vector/) instead for the requirement where it implicitly manages memory for you.