Question

WRITE A C PROGRAM TO ACCEPT A NUMBER AND FINDOUT WHETHER IT IS PRIME OR NOT.​

Answer 1

Answer:

The program output is also shown below.

* C program to check whether a given number is prime or not.

* and output the given number with suitable message.

#include <stdlib.h>

int num, j, flag;

printf("Enter a number \n");

scanf("%d", &num);

if (num <= 1)

printf("%d is not a prime numbers \n", num);..

Explanation:

Proof: The definition of a prime number is a positive integer that has exactly two positive divisors. However, 1 only has one positive divisor (1 itself), so it is not prime. ... A prime number is a positive integer whose positive divisors are exactly 1 and itself.