Prime Number:
A positive number whose divisors only 1 and the number itself (among all the positive numbers) are known as prime number.
Example: 1,2,3,5,7,11.
Among positive even number only 2 is the prime number rest of all the prime numbers are odd(positive) number.
#include<stdio.h>
int main()
{
int number,i,j,primeNumber=0;
printf("please Enter a Number:\n");
scanf("%d",&number);
for(i=2;i<=number/2;i++){
if(number%i==0)
primeNumber++;
break;
}
if(primeNumber==0 && number!=1)
printf("%d is a Prime Number\n",number);
else
printf("%d is not a Prime Number\n",number);
return 0;
}
output:
please Enter a Number:
5
5 is a Prime Number.