SOS😢

Question

I wrote this code that arranges a group of numbers, but there is something bothering me about it. Here the user has to enter the number of numbers. Can I exempt him from that
https://code.sololearn.com/cjG63TbXmYlP/?ref=app

Answer 1

Thanks man I didn't know about this vector thing
It didn't work at first put after some searching i solved the problem
You should use the header
#include <vector>

Answer 2

Do you mean trouble in entering in input?
Add input line by line or space separated. Ex:
3
2 5 4

// 3 is n value, next values are into array .

Or, you want to remove n input?
Actually,
Variable size arrays are recommended to use. You can use vector instead.

So better to use as :

int main() {
int n,x;
//cin >>n;
int free;
//int arr [n];
vector<int> arr;
while(cin >>x )
arr.push_back(x);

n = arr.size();

// continue your loop..
//...
//...

Answer 3

Yes. I should also mentioned about the header. You are found it well👏

You're welcome...