Use for_each() algorithm to show elements in a vector and do the summation : for_each « STL Algorithms Non modifying sequence operations « C++ Tutorial

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C++ Tutorial » STL Algorithms Non modifying sequence operations » for_each 
25.11.7.Use for_each() algorithm to show elements in a vector and do the summation
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

void show(int i) {
  cout << i << endl;
}

// A running sum.
int summation(int i) {
  static int sum = 0;

  sum += i;
  return sum;
}

int main()
{
  vector<int> v;
  int i;

  for(i=1; i < 11; i++v.push_back(i);

  for_each(v.begin(), v.end(), show);

  for_each(v.begin(), v.end(), summation);
  
  cout << summation(0);

  return 0;
}
25.11.for_each
25.11.1.Use for_each with predicate
25.11.2.Use for_each function to add value for each element
25.11.3.Use for_each function to add first element to each element in the list
25.11.4.Use for_each function to print all elements in a vector
25.11.5.Call custom function in for_each
25.11.6.Use custom function and for_each to calculate mean value
25.11.7.Use for_each() algorithm to show elements in a vector and do the summation
25.11.8.Using for_each to Display the Contents of a Collection
25.11.9.The square of every integer in a vector
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