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  1. #include <stdio.h>
  2. #include <math.h>
  3. int main(void) {
  4. 	int n;
  5. 	double x,e=1,fac=1,t;
  6. 	scanf("%d %lf",&n,&x);
  7. 	if(n==0){printf("%lf",e);return 0;}
  8. 	t=x;
  9. 	for(int i=1;i<=n;i++)
  10. 	{
  11.  
  12. 		fac*=i;
  13. 		e+=t/fac;
  14. 		t*=x;
  15. 	}
  16. 	printf("%lf",e);
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 2160KB
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1.000000
https://ideone.com/tNw3au
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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