C++ count vector elements

// 1.
for(std::vector<int>::iterator it = vector.begin(); it != vector.end(); ++it)
    sum_of_elems += *it;

// 2.
// #include <numeric>
sum_of_elems = std::accumulate(vector.begin(), vector.end(), 0);

// C++11 and higher
// 3.
// #include <numeric>
sum_of_elems = std::accumulate(vector.begin(), vector.end(),
                               decltype(vector)::value_type(0));

// 4.
for (auto& n : vector)
    sum_of_elems += n;

Source: stackoverflow.com

Similar codes

1 vote183 views1 answer
Swap using Function template in c++
C++
0 vote179 views1 answer
Recherche recursive le max dans une liste
C++
1 vote190 views2 answers
How to get size of char array in c++
C++
0 vote189 views1 answer
C++ std map initializer list
C++
1 vote195 views1 answer
Cpp goiver all the map values
C++
1 vote188 views1 answer
Meter espacios en cadena c
C++
0 vote191 views1 answer
2d array of zeros c++
C++
1 vote191 views1 answer
Find last digit of number
C++
0 vote169 views1 answer
How to read qlistwidget in c++
C++
2 votes177 views1 answer
Rng c++
C++