Finding the Mean Value : accumulate « STL Algorithms Helper « C++






  1. C++
  2. STL Algorithms Helper
  3. accumulate

Finding the Mean Value

  
#include <iomanip>
#include <iostream>
#include <numeric>
#include <vector>

using namespace std;

int main( )
{
   // miles per gallon for different cars in fleet
   const float mpg_data[] = { 1.1, 9.9, 8.8, 3.3, 2.2, 2.2,4.4 };

   // create a vector and initialize it with the above data
   vector<float> mpg( mpg_data,mpg_data + sizeof( mpg_data ) / sizeof( mpg_data[0] ) );

   // mean
   float fleet_average = accumulate( mpg.begin(), mpg.end(), 0.0 )/ mpg.size();
   cout << fleet_average << endl;
}








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