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- #include <stdio.h>
- #include <conio.h>
- #include <math.h>
- #include <iostream>
- using namespace std;
- using namespace std;
- int isprima(int n)
- {
- int li;
- if (n == 2)
- return 1;
- if (n % 2 == 0 || n == 1)
- return 0;
- for(li = 3;li <= sqrt(n);li+=2)
- {
- if (n%li == 0)
- return 0;
- }
- return 1;
- }
- int main()
- {
- int li,banyak,awal,akhir;
- banyak = 0;
- cout<<"Masukkan angka awal : ";cin>>awal;
- cout<<"Masukkan angka akhir : ";cin>>akhir;
- cout<<endl<<"Bilangan Prima dari "<<awal<<" hingga "<<akhir<<" adalah:"<<endl;
- for(li = awal;li<=akhir;li+=2)
- if (isprima(li))
- {
- cout<<li<<" | ";
- banyak+=1;
- if (banyak % 5 == 0)
- cout<<endl;
- }
- cout<<endl<<endl<<"banyak bilangan prima = "<<banyak;
- getch();
- }
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