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  1. #include <stdio.h>
  2. long giai_thua(int in) {
  3.   if (in == 0) 
  4.     return 1;
  5.   else 
  6.     return in * giai_thua(in-1);  
  7. }
  8.  
  9. double xac_suat(int in) {
  10. 	int i;
  11. 	double expected;
  12. 	expected = (in - 1) * (in - 2) * (in - 3) *4 / (54*53*52*51);
  13. 	printf ("expected = %f\n", expected);
  14. 	return expected;
  15. }
  16.  
  17. int main(void) {
  18. 	// your code goes here
  19. 	  int i;
  20.  
  21.   double expected;
  22.   expected = giai_thua(4) * 50 /(54*53*52*51);
  23.  
  24.   for (i = 5; i <= 53; i++) {
  25.     expected = expected + xac_suat(i) * (54 - i);
  26.   }
  27.  
  28.   printf("expected value = %f", expected);
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 2156KB
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stdin
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Standard input is empty
stdout
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expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected = 0.000000
expected value = 0.000000
https://ideone.com/ztCv3f
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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