Thursday, 9 August 2018

C Prime Number Program

C Prime Number Program

C Prime Number Program
C Prime Number Program

In this post we are going to see  c prime number program. in which we will see how to check where given number is prime number or not a prime number through a very simple logic in c prime number program.
  
Before that for your better understanding we will see what is prime number means-

what is prime number?

"prime number is nothing but the number which can be divisible by only '1' and 'itself number' only."

means a number which cant be decide  by any other number other than 1 and itself number.

for example: suppose 5 is a number. 5 can be only divisible by 1 and 5, so that it is prime number. take another number 6, 6 can be divisible by 1,2,3 and 6, so that it is not a prime number.

hope you understand logic of prime number. lets see how to write c  prime number program.

c prime number program 


#include<stdio.h>
# include<conio.h>
void main()
{
  clrscr();
  int num=0,count=0,i=0;
  printf("Enter any number to check where it is prime or not:");
  scanf("%d",&num);
  for(i=1;i<=num;i++)
  {
   if(num%i==0)
   count=count+1;
   }
   if(count==2)
   {
   printf("Entered Number is a Prime Number");
   }
   else
   {
   printf("Entered Number is Not a Prime Number");
   }
   getch();

}

Output:


Enter any number to check where it is prime or not: 5
Entered Number is a Prime Number

hope you have understand the prime number program in c. if you have still any concern about it you can fill free to ask in comment box.
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