ct 3 no.

#include<stdio.h>

main()

{
    int n1,n2,i,j,m , prime1=1 , prime2=1 ;

    printf("enter ranges:");

    scanf("%d %d",&n1,&n2);

    for(i=n1;i<=n2;i++)
    {
        prime1=1 , prime2=1 ;///for not giving this line , I am going to get very little number. so , you have to be careful about these small things next time .

        for(j=2;j<i;j++)
        {
            if(i%j==0)
            {
                prime1=0;
                break;
            }
        }
        for(m=2;m<i+2;m++)
        {
            if((i+2)%m==0)
            {
                prime2=0;
                break;
            }
        }


        if(prime1==1&&prime2==1&&i+2<n2)
           printf("%d %d \n",i,i+2);


    }

    return 0;
}