前言

由于偶然间发现for_each能使得避免使用for循环，大大简化了代码。这里简单记录下for_each的一个简单示例demo,方便温习。

示例demo

#include <iostream>
#include "vector"
#include "algorithm"void myfunc1(int i)
{std::cout << i << " ";
}int main() {std::vector<int> arr{ 3, 4, 2, 6, 5, 1 };std::cout << "based on for_each, print the vector\n";for_each(arr.begin(), arr.end(), myfunc1);std::cout << "\n";std::cout << "based on lambda, print the vector\n";for_each(arr.begin(), arr.end(), [](const auto &i){std::cout << i << " ";});return 0;
}