Cpp program to find prime numbers in an array

Write a Cpp program to find the prime numbers in an array.

#include<iostream>
using namespace std;
int main(){
    int num[10],a,b;
    cout<<"Enter 10 positive integer numbers"<<endl;
    for(a=0;a<10;a++)
    {
        cin>>num[a];
    }
    cout<<"Prime numbers are: ";
    for(a=0;a<10;a++)
    {
        bool isPrime=true;
        if(num[a]==1)
        {
            isPrime=false;
        }
        for(b=2;b<num[a];b++)
        {
            if(num[a]%b==0)
            {
              isPrime=false;
              break;  
            }
        }
        if(isPrime)
        {
            cout<<num[a]<<"  ";
        }
    }
    return 0;
}

Enter 10 positive integer numbers

12

1

13

7

25

67

89

11

45

76

Prime numbers are: 13 7 67 89 11