#include <iostream>
#include <string>
#include <map>
using namespace std;
int main() {
map<string, int> m_test;
m_test.insert(pair<string, int>("A", 100));
m_test.insert(pair<string, int>("B", 200));
m_test.insert(pair<string, int>("C", 300));
m_test.insert(pair<string, int>("D", 400));
m_test.insert(pair<string, int>("E", 500));
map<string, int>::iterator iter;
iter = m_test.end();
int lastValues = 3;
while (lastValues != 0) {
iter--; lastValues--;
cout << iter->first << ", " << iter->second << endl;
}
system("pause");
return 0;
}
#include <iostream>
#include <map>
#include <string>
int main() {
std::map<int,std::string> m = {
{1,"1"},
{2,"2"},
{3,"3"},
{4,"4"},
{5,"5"},
{6,"6"},
{7,"7"},
{8,"8"},
};
int i = 0;
for(auto it = --m.end();it != m.begin();--it,++i){
if(i>4){break;}
std::cout << it->first << ':' << it->second <<std::endl;
}
return 0;
}
#include <string>
#include <map>
#include <algorithm>
#include <iostream>
int main() {
std::map<int, std::string> m {
{ 1, "one" },
{ 2, "two" },
{ 3, "three" },
{ 4, "four" },
{ 5, "five" },
{ 6, "six" },
{ 7, "seven" },
{ 8, "eight" },
{ 9, "nine" },
{ 10, "ten" },
};
auto from = m.end();
// откатываемся назад на 5 элементов (возможно есть способ покрасивее)
for (int i = 0; i < 5; i++) {
from--;
}
std::for_each(from, m.end(), [](auto&& pair) {
std::cout << pair.first << ": " << pair.second << std::endl;
});
}
<use>
input[value ="customer/customer"] {display:none} 
$ перед именами переменных.$penaverh = 0;
$penaniz = 0;
$voskverh = 0;
$voskniz = 0;
if( ($uroven & 1) > 0 ) $penaverh=1;
if( ($uroven & 2) > 0 ) $penaniz=1;
if( ($uroven & 4) > 0 ) $voskverh=1;
if( ($uroven & 8) > 0 ) $voskniz=1;$penaverh = ($uroven >> 0) & 1; // меняется номер бита, справа налево
$penaniz = ($uroven >> 1) & 1;
$voskverh = ($uroven >> 2) & 1;
$voskniz = ($uroven >> 3) & 1;
#include <iostream>
#include <regex>
void parse()
{
std::string var = "smth [f] [data="j",data1="gs"]";
const std::regex r("<-ваш regex->");
std::smatch sm;
if (regex_search(var, sm, r))
{
cout << sm[1] << sm[2] << sm[3] << endl;
}
}
$string="se234234влоатваfGhrft";
$count = preg_match_all("/[A-z]{1}/", $string, $matches);
var_dump($count);int(8) 
