[C++]每行10个输出所有小于等于n的素数_c语言编写小于n的素数,按照每行10个输出

#include <iostream>
#include <math.h>
using namespace std;
void JudgePNumber(int n,int& count) {
	int  j, k;
	k = (int)sqrt((double)n);
	for (j = 2; j <= k; j++)
	{
		if (n%j == 0)//-----will go out
			break;	
	}
	if (j > k)
	{
		cout << n << "  ";
		count++;
	}	
}
int main() {
	int m,n,j=0;
	cout<<"please input a number: "<<endl;
	cin >> m;
	for (n = 2; n <= m; n++)
	{ 
		JudgePNumber(n,j);//-----引用可以更改
		if (j>=10)
		{
			cout << endl;
			j = 0;
		}
	}
	cout << endl;
	system("pause");
	return 0;
}

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