要求用while循环实现反复输入一个整数然后判断是否为素数,当输入负一时...
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答:include<stdio.h>int main(){ int n,i,flag; while(1){ scanf("%d",&n); if(n==-1) break; flag=1; if(n==0 || n==1){ printf("%d不是素数!\n",n); continue; } ...