Check Number is Prime or not using C Programming Language

Check Number is Prime or not using C Programming Language

 Code :

 #include   <stdio.h>

#include   <stdbool.h>

#include   <math.h>


int  main() {

  int  number;

 printf( "isPrime? \n" );

 printf( "\n" );

 printf( "Enter the number to be checked \n" );

 scanf( "%d" , &number);

 printf( "\n" );

  bool  isPrime =  true ;

  int  i;


  //Prime number checker

  if  (number > 1) {

   for  (i = 2; i <= sqrt(( double )number); i++) {

    if  (number % i == 0) {

    isPrime =  false ;

     break ;

   }

  }

 }

  else  {

  isPrime =  false ;

 }


  if  (isPrime) {

  printf( "It is a Prime Number \n" );

 }

  else  {

  printf( "Not a Prime Number \n" );

 }

 printf( "\n" );

  return  0;

}






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