Program to cheque enter number is prime or not in C-language

-
#include<stdio.h>
int main()
{
 int n,i,c=0;
 printf("Enter any number\n");
 scanf("%d",&n);
 for(i=1;i<=n;i++)
 {
     
            if(n%i==0)
            {
                c++;
            }
}
        if(c==2)
        {
            printf("%d is prime",n);
        }
    else
    {
        printf("%d is nt prime",n);
    }

}

OUTPUT
Enter any number
19
19 is prime

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