C++ Program to a Number is Prime or Not
Assume that you want to check whether the No. is prime or not. Write a Program that ask for a No. representing. When it finishes the calculation, the program asks if the user wants to do another calculation. The response may be yes or no (Y\N).
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Source Code
#include<iostream>
#include<conio.h>
using namespace std;
class prime
{
int d;
public:
void getn()
{
cout<<"Enter a number :";
cin>>d;
}
void isprime()
{
int i,flag=0;
for(i=2;i<=(d/2);i++)
{
if((d%i)==0)
{
flag=1;
break;
}
}
if(flag)
cout<<"Composite!!";
else
cout<<"Prime!!";
}
};
int main()
{
prime a;
char ch;
do
{
a.getn();
a.isprime();
cout<<endl<<"Do you wish to do another calculation (Y/N)?";
cin>>ch;
}
while(ch!='N') ;
}
Output
