#include<iostream>

using namespace std;

void main()

{

int i, m, sum = 0, j = 0;

for (m = 999; m >= 3; m--)

{

int k = 1;

for (i = 2; i < m; i++)

{

if (m%i == 0)

{

k = 0;

break;

}

}

if (k=1)

{

sum = sum + m;//求10個素數的之和

j++;

}

if (j == 10)

cout << sum; break;

}

}

輸出框為空是怎么回事