Program:

    #include<iostream.h>
    #include<conio.h>

    void main()
    {
    int n,num,step,sq_rt,count=1;
    clrscr();
    cout<<"\nHow many primes are required? \n";
    cin>>n;
    cout<<"\n"<<n<<" Primes are: \n";
    cout<<2;
    num=3;
    while(count<n)
    {
    sq_rt=sqrt(num);
    step=2;
    while(step<=sq_rt)
    {
    if((num%step)==0)
    break;
    else
    step++;
    }
    if(step>sq_rt)
    {
    cout<<" "<<num;
    count++;
    }
    num+=2;
    }
    getch();
    }