Program to find the max and biggest negative number

Question

The following code prints the maximum and the biggest negative value (if we have -10 and -5, -5 is bigger) of numbers entered unitl a symbol is reached. My question is if there is a better way to find the largest negative value (avoiding INT_MIN or other clumsy ways of this kind).

#include <stdio.h>
#include <conio.h>
#include <limits.h>
int main()
{
    float max=0, n, bnn=INT_MIN;
    while(1){
        printf("Enter an integer:");
        if(scanf("%f", &n)!=1){
            break;
        }
        if (n>max)
            max=n;
        else if(n>=bnn)
             bnn=n;
    }
    printf("The maximum number of the entered ones is:%0.2f\n", max);
    printf("The biggest negative number is:%0.2f", bnn);
    getch();
}

Answer 1

Start bnn at 0.0 Then

if ((n < 0) && ((bnn == 0.0) || (n > bnn)))
  bnn = n;

Answer 2

Fun with NaN.

Comparing with Not-A-Number always returns false.

#include <stdio.h>
#include <limits.h>

int main() {
  float max = 0.0 / 0.0;  // NaN
  float bnn = 0.0 / 0.0;
  while (1) {
    float n;
    printf("Enter a number:");
    if (scanf("%f", &n) != 1) {
      break;
    }
    if (!(n <= max))
      max = n;
    // if by "biggest", OP means most negative
    // if ((n < 0.0) && (!(n <= bnn)))
    // if by "biggest", OP means greatest
    if ((n < 0.0) && (!(n >= bnn)))
      bnn = n;
  }
  printf("The maximum number of the entered ones is:%0.2f\n", max);
  printf("The biggest negative number is:%0.2f\n", bnn);
  return 0;
}