#include <stdio.h>
#include<math.h>

int main() {
    int a,b,i,j, flag;
    printf("enter lower bond of interval \n");
    scanf("%d",&a);     //TAKE INPUT
    printf("enter upper bond of interval \n");
    scanf("%d",&b);
    printf("prime no between %d and %d are: \n",a,b);
    
    for(i=a;i<=b;i++) {
        if (i==1 || i==0)
        continue;
        flag=1;   //flag means means
        
        for (j=2;j<=i/2; ++j) {
            if(i%j ==0){
                flag = 0;
                break;
            }
        }
         if (flag == 1)
         printf("%d\n",i);
    }
    return 0;
}