text: #include <stdio.h>
  #include <math.h>
  int main()
  {
      int n;
      printf("Input a number and I will tell you if it is prime:");
      scanf("%d",&n);
      for (int i = 2; i <=sqrt(n) ; ++i)
          if( !(n%i) )
          {
              printf("It is not prime");
              return 0;
          }
      printf("It is prime");
      return 0;
  }