D23:multiple of 3 or 5 (multiple of 3 or 5, translation + solution)

The original title is ：OpenJudge - 23:Multiple of 3 Or 5

translate ：

describe ： seek [1,N] How many integers are 3 or 5 Multiple ;

Input ： Not more than one 100000 The positive integer N;

Output ： An integer .

Code ：

#include<iostream>
using namespace std;
int main()
{
	int n,i=1,ans=0;
	cin>>n;
	for(i=1;i<n;i++)
		if(i%5==0||i%3==0) ans++;
	cout<<ans;
	return 0;
}