Write a C program that receives an integer number and determines if it is a prime number or not.
#include <stdio.h>
#include <stdlib.h>
bool isPrime(int n);
int main(int argc, char *argv[])
{
int num;
printf("Please enter a number: ");
scanf("%d", &num);
if(isPrime(num))
{
printf("%d is a prime number\n",num);
}
else
{
printf("%d is NOT a prime number\n",num);
}
}
bool isPrime(int n)
{
long i;
if (n < 2)
return false;
for (i = 2; i < n; i++)
{
if ((n % i) == 0)
return false;
}
return true;
}