some help please..

[lyojarhhs]

my c

[yxunomei]

hmmm... maybe more info? like what type do you use for all those variable ? (int, double, float etc)

[lyojarhhs]

#include <stdio.h>
#include <math.h>
main ()
{
int size, level, temp, max_population, max_pop_generations, population, hours, k, k_size, k_temp, l_level, e, k_rate_of_change, generations ;

max_population = 0 ;
max_pop_generations = 0 ;
generations = 0 ;
population = 1 ;
hours = generations * 20 / 60 ;
e = M_E ;

[yxunomei]

that int is your problem...

use float...

try this

#include <stdio.h>

int main() {
   int a = 10.0 / 3;
   printf("%d\n", a);

   float b = 10.0 / 3;
   printf("%f\n", b);

   return 0;
}

[Cactus_Hugger]

  population = 1 * ( M_E ^ (( 1 - k ) * generations )) ;

Do note that ^ is not exponents. (It's a binary xor.) For exponents, lookup the function pow.

And to further explain, integers, the type you were using, cannot hold numbers like M_E. (e is not an integer - it's rational.) To hold numbers like .25, pi, e, etc, use float or double. (double gives more precision.)