Answer Posted / m.shanmuga sundaram,rjnsoftwar

void main()
{
int primeNo;
int i;
bool isPrime = false;

printf("Enter a number to check prime or not\n");
scanf("%d",&primeNo);

for(i = 2; i <= primeNo / 2; i++)
{
if(primeNo % i == 0)
{
isPrime = true;
break;
}
}

if(isPrime)
printf("The number is a prime number %
d\n",primeNo);
else
printf("The number is not a prime number %
d\n",primeNo);
}

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