Code
// WAP to check the number is prime or not...(Using for loops)(v.imp ques.)
#include <stdio.h>
int main()
{
int number, prime = 1;
printf("Enter the number\n");
scanf("%d", &number);
for (int i = 2; i * i < number; i++) // check by root n method
{
if (number % i == 0)
{
prime = 0;
break;
}
}
if (prime == 0)
{
printf("The number %d is not a prime number\n", number);
}
else
{
printf("The number %d is a prime number\n", number);
}
return 0;
}
Output
Enter the number 13 The number 13 is a prime number