prime check in c
int isPrime(long long number) {
if (number == 0 || number == 1 || (number % 2 == 0 && number > 2)) {
return 0;
}
else {
for (long long i=3; i <= (long long)sqrt(number)+1; i++) {
if (number % i == 0) {
return 0;
}
}
return 1;
}
}check if the number is prime in c
#include <stdio.h>
void main() {
int number;
printf("\n\n\tEnter the number and we will check, if the number is prime or not : ");
scanf("%d", &number);
if (number == 0 || number == 1 || (number % 2 == 0 && number > 2))
{
printf("\n\tThe entered number is not a prime number!");
}
else
{
printf("\n\tThe entered number is a prime number!");
}
}Copyright © 2021 Codeinu
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