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Rooted by: C++ function that returns the mean of an array
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  • Code 
    #include <numeric>

double Mean(double x[], int n){
  return std::accumulate(x, x + n, 0) / n;
}
     Test Cases 
    // TODO: Replace examples and use TDD by writing your own tests

Describe(any_group_name_you_want)
{
    It(should_do_something)
    {
      int n = 4;
      double x[] = {4,8,4,8};
      double mean;
      
      mean = Mean(x ,n);
        Assert::That(6, Equals(mean));
    }
};
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  • Code
    • #include <iostream>
    • #include <numeric>
    • double Mean(double x[], int n){
    • double sum = 0;
    • for(int i = 0; i < n; i++){
    • sum += x[i];
    • }
    • return sum / n;
    • return std::accumulate(x, x + n, 0) / n;
    • }