Question

嗨

請問我要做一個判斷是否為質數的迴圈，我不懂為什麼要i要小於等於n-1 i又是什麼？

)

private void button3_Click(object sender
EventArgs e)

+

String str = nul

inti=2;
Intn;

n=Convert.Tolnt32(textBox3.Text);
while(n==2)
t

Str= Prime

break;

)
for (=2;1i<=n-1; i++)
{
if(n%1== 0D0)
(
StrF = Nota Prime
break;

)

else

(

st = Primey
)
》

labell1.Text = str