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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. #define EPSILON 1.0e-8
  5. int main() {
  6.   double sum, term;
  7.   int p, i;
  8.   p = 1;
  9.   sum = 1.0;
  10.   for (i = 1;; i++) {
  11.     /* break-condition */
  12.     if ((term = 1.0 / (p = p * i)) < EPSILON)
  13.       break;
  14.     sum += term;
  15.   }
  16.   printf("         +0.1234567\n");
  17.   printf("result:  %+.12f\n", sum);
  18.   printf("exp(1) = %+.12f\n", exp(1.0));
  19.   printf("diff:    %+.12f\n", sum - exp(1.0));
  20.   return 0;
  21. }
  22. /* end */
Success #stdin #stdout 0.02s 1720KB
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stdin
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Standard input is empty
stdout
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         +0.1234567
result:  +2.718281826198
exp(1) = +2.718281828459
diff:    -0.000000002261
https://ideone.com/iis9g
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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