打印输出范围内素数的个数有多少，采用C编程语言方式的实现

Question

Problem Description
Give you a lot of positive integers, just to find out how many prime numbers there are.

Input
There are a lot of cases. In each case, there is an integer N representing the number of integers to find. Each integer won’t exceed 32-bit signed integer, and each of them won’t be less than 2.

Output
For each case, print the number of prime numbers you have found out.

Sample Input
3
2 3 4

Sample Output
2

Answer 1

只会java的，应该差不多吧

Scanner sc = new Scanner(System.in);
        System.out.println("输入起始:");
        int beginNum = sc.nextInt();
        System.out.println("输入结束:");
        int endNum = sc.nextInt();
        if(endNum>beginNum)
        {
            for(int i = beginNum;i<=endNum;i++)
            {
                boolean isPrime = true;
                for(int j = 2;j<=Math.sqrt(i);j++)
                {
                    if(i%j==0)
                    {
                         isPrime = false;
                         break;
                    }
                }
                if(isPrime)
                {
                    System.out.println(i);
                }
            }
        }