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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main(){
  5.     srand(time(NULL));
  6.     double a = 0, b;
  7.     for(int i = 0; i < 1000; i++){
  8.         a += (double)rand() * 2 / RAND_MAX - 1;
  9.     }
  10.     b = a / 1000.0; 
  11.     cout << b;
  12.     return 0;
  13.     }
Success #stdin #stdout 0s 4484KB
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stdin
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Standard input is empty
stdout
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-0.0435333
https://ideone.com/tw7RJX
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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