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ntddk/isprime.c

Created September 18, 2014 18:57
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isprime.c
n;f;i;main(){scanf("%d",&n);printf("%d ",n);if(n<=1)f=1;for(i=2;++i<=n/2;){if(n%i==0)f=1;break;}printf((f==0)?"is a prime number":"is not a prime number");}
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