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Aug 24th, 2016
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  1. #include <stdio.h>
  2.  
  3. #define MAX 3524578 /* Máximo número antes de 4.000.000 */
  4.  
  5. int main(){
  6.  
  7. int i, fib = 0;
  8. int ant1 = 1;
  9. int ant2 = 2;
  10. int sum = 2; /* Contemplo ya al 2 de la sucesión inicial */
  11.  
  12. for(i = 0; fib < MAX; i++){
  13.  
  14. fib = ant1 + ant2;
  15. ant1 = ant2;
  16. ant2 = fib;
  17.  
  18. if(fib % 2 == 0)
  19. sum += fib;
  20. }
  21.  
  22. printf("La suma de todos los números pares de Fibonacci debajo de 4.000.000 es: %d \n", sum);
  23. }
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