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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. f(n){return n?n*f(n-1):1;}float c(n,x)float x;{return n?c(n-1,x)+pow(-1,n)*pow(x,2*n)/f(2*n):1;}
  5.  
  6. int main(void)
  7. {
  8. 	printf("%f", c(0.5, 1));
  9. 	return 0;
  10. }
  11.  
Success #stdin #stdout 0s 9432KB
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Standard input is empty
stdout
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0.875000
https://ideone.com/agZrkz
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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