#include<bits/stdc++.h>
using namespace std;
bool isPrime(int num){
for(int i=2;i<num;i++){
if(num%i == 0)
return false;
}
return true;
}
int main(){
int n;
int arr[1004],mularr[1004];
int count = 0,mulCount=0;
cout << "Enter a number between 0-1000: ";
cin >> n;
while(n>1000 && n<0){
cout << "Enter a number between 0-1000: ";
cin >> n;
}
cout << endl;
for(int i=2;i<=n;i++){
if(isPrime(i)){
arr[count] = i;
count++;
}
}
cout << "Total number of prime numbers found: " << count << endl;
for(int i=0;i<count;i++)
cout << arr[i] << endl;
cout << endl;
for(int i=0;i<count/2;i++){
mularr[mulCount] = arr[i]*arr[count-i-1];
mulCount++;
}
cout << "Total number of elements in the multiplication output array: " << mulCount<<endl;
for(int i=0;i<mulCount;i++)
cout << mularr[i] << endl;
}
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