upper prime - lower prime

I wrote something but ı have to enter 2 times. also ı want to add cod next prime number - previous prime number I tried a lot, but I couldn't.

Code:

---

#include <iostream>
 
using namespace std;
 
int main()
{
    int i,j=2,number,count,num,x;
 
    cout<<"Enter number ";
    cin>>number;
    cin>>num;
    for(i=number+1;i<3000;i++)
    {
        for(j=2;j <i;j++)
        {
            if(i %j==0)
            {
                break;
            }
        }
        if(i==j || i==1)
        {
            cout<<"\t"<<i;
            break;
        }
    }
    for( int a=num-1;a>=1;a--)
  {
  for(int b=2;b<a;b++)
      {
      if(a%b==0)
      count++;
      }
      if(count==0)
      {
      if(a==1)
      {
      cout<<"no prime number less than 2";
      break;
    }
      cout<<a<<" last prime and next prime number before entered number"<<endl;
      break;
      }
      count=0;
}
return 0 ;
}


---

"I wrote something" is terribly vague.

You have to enter two times because you request for input twice. If you don't want that, you need to figure out why you are doing that: maybe you can copy the value to another variable instead.

Having variables named num and number is confusing. Choose one, make the other more descriptive.

You need to comment your code, or at least move parts of it into functions that have descriptive names.