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#include "
stdio.h"
int main()
{
int n,flag=1,i;
scanf("%d",&n);//è¾å
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for(i=2;i<n;i++)
{
if(n%i==0)// æ ¹æ®ç´ æ°çå®ä¹nä¾æ¬¡é¤ä»¥å°äºå®æ¬èº«å¤§äº1çæ°
{
flag=0;//ä¸æ¦æè½è¢«æ´é¤çæ°ï¼è¡¨æ nä¸æ¯ç´ æ°ï¼ä½¿å¾flag=0 ã
}
}
if(flag==0)//æ ¹æ®flagçå¼å¤ænæ¯å¦æ¯ç´ æ°
printf("%dä¸æ¯ç´ æ°",n);
else
printf("%dæ¯ç´ æ°",n);
return 0;
}
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