Posted by : ANIMESH SHAW Tuesday, 8 November 2011


#include<stdio.h>
#include<conio.h>
int IsPrime(int);
void TwinPrime(int,int);
main()
{
      int a,b,i,k=0;
      printf("\n Enter INITIAL AND FINAL LIMITS");
      scanf("%d %d",&a,&b);
      TwinPrime(a,b);    
      getch();
}
int IsPrime(int n)
{
         if(n<2)return 0;
         if(n==2)return 1;
         for(int i = 2;i<n;i++)
         if(n%i==0)return 0;
         return 1;
}
void TwinPrime(int m, int n)
{
         for(int i=m;i<n;i++)
         if(IsPrime(i) == 1&&IsPrime(i+2) == 1)
         printf("%d %d ARE TWIN PRIMES\n", i, i+2);
}



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