Example & Tutorial understanding programming in easy ways.

Write a program to count the sexy prime in between the two number range.

program:

#include<stdio.h>

int prime(int n)

{

    int i;

    for(i=2;i<n;i++)

    {

        if(n%i==0)

        return 0;

    }

    return 1;

}

int main()

{

    int a,b,i,count=0;

    printf("Enter two number for rangen");

    scanf("%d%d",&a,&b);

    for(i=a;i<=b;i++)

    {

        if(prime(i) && prime(i+6))

        count++;

    }

    printf("Number of sexy prime is : %d",count);

}

output:

Enter two number for range

3

30

Number of sexy prime is : 6