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  1. #include <stdio.h>
  2.  
  3. double my_exp_n (double x, int degree)
  4. {
  5.     int i;
  6.     double exp_val=1.0;
  7.     double x_div_l = x;
  8.  
  9.     for (i=0;i<degree;++i)
  10.     {
  11.         exp_val += x_div_l;
  12.         x_div_l *= x / (i+2);
  13.     }
  14.  
  15.     return exp_val;
  16. }
  17.  
  18. #define my_exp(x) my_exp_n((x), 100)
  19.  
  20. int main()
  21. {
  22.     int i;
  23.  
  24.     for (i=0;i<=10;++i)
  25.     {
  26.         int x = 3*i;
  27.         printf("exp(%d) = %e\n", x, my_exp(x));
  28.     }
  29.     return 0;
  30. }
Success #stdin #stdout 0.02s 1676KB
comments (?)
stdin 
Standard input is empty
stdout 
exp(0) = 1.000000e+00
exp(3) = 2.008554e+01
exp(6) = 4.034288e+02
exp(9) = 8.103084e+03
exp(12) = 1.627548e+05
exp(15) = 3.269017e+06
exp(18) = 6.565997e+07
exp(21) = 1.318816e+09
exp(24) = 2.648912e+10
exp(27) = 5.320482e+11
exp(30) = 1.068647e+13
https://ideone.com/A7QIpb
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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