how to find prime number in c++:

This is the source code for determining that given number is prime or not #include<iostream.h>

#include<conio.h>

main()

{

int x;

for(int i=1;i<=100;i++){

cout<<"enter the number"<<endl;

cin>>x;

if(x==2 || x==3 || x==5){

cout<<"number is prime"<<endl;

}

else if(x%2==0 || x%3==0 || x%5==0)

{

cout<<"not prime"<<endl;

}

else

{

cout<<"number is prime"<<endl;

}

}

getch();

}

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