Search a value in one dimensional array in C++

#include<iostream>
using namespace std;
bool Search(int arr[],int& s,int& val)
{
     for(int i=0;i<s;i++)
     {
           if(val == a[i])
          {
               return true;
          }
     }
     return false;
}
int main(void)
{
     int size=0,value=0;
     cout<<"\n\tEnter size of array:\t";
     cin>>size;
     int *arr=new int[size];
     cout<<"\n\tEnter value to search in array:\t";
     cin>>value;
     if(Search(arr,size,value))
     {
           cout<<value<<" exist in array";
     }
     else
     {
           cout<<value<<" doesnot exist in array";
     }
     cout<<"\n\n";
     return 0;
}