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Write a program to find whether the given number is a prime numbers

Source Code

#include<stdio.h>
#include<conio.h>
int main (int argc, char *argv[])
{
  clrscr();
  int n=0,i=0,c=0;
  printf("\n Enter the number:");
  scanf("%d",&n);
  for(i=1;i<=n;i++)
10    {
11         if(n%i==0)
12      c++;
13    }
14    if(c<=2)
15        printf("%d is a prime number",n);
16    else
17        printf("%d is not a prime number",n);
18    getch();
19  }

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