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  1. #include<cstdio>
  2. #include<cmath>
  3. #include<iostream>
  4. using namespace std;
  5.  
  6. double data[20]={2,6,8};
  7. int K=3,P;
  8. double clac(double x){
  9. 	double sum=-1;
  10. 	for(int i=0;i<K;++i){
  11. 		sum*=x-data[i];
  12. 	}
  13. 	return sum;
  14. }
  15. int main(){
  16. 	printf("%.30lf\n",clac(7.097167));
  17. 	printf("%.30lf\n",clac(7.097168));
  18. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
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3
2 6 8
1
stdout
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5.049042475525643780542850436177
5.049042475526074547076404996915
https://ideone.com/nWlUvm
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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