List<> in C++

[G1vDizwU]

Hi guys,

Consider we have a list as follows:

list<char> lch = { 'H', 'e', 'l', 'l', 'o' };

How to move over it (for example) to write out the elements using a loop, please?

Thanks.

[Chervil]

See the example code in the reference for begin()
http://www.cplusplus.com/reference/list/list/begin/

[Chervil]

The iterator using begin and end will work for other standard containers as well as std::string.

There is also the c++11 range-based for loop which is simpler to use.

#include <iostream>
#include <list>
#include <string>
#include <vector>


template <class T>
void display(const T & values)
{
    for (auto it=values.begin(); it!=values.end(); ++it)
        std::cout << *it << ' ';
    std::cout << '\n';
}

template <class T>
void show(const T & values)
{
    for (auto a : values)
        std::cout << a << ' ';
    std::cout << '\n';
}


int main()
{
    std::vector <char> vec = { 'H', 'e', 'l', 'l', 'o' };
    std::list   <char> lis = { 'H', 'e', 'l', 'l', 'o' };
    std::string str= "Hello";
    
    display(vec);
    display(lis);
    display(str);    
    
    show(vec);
    show(lis);
    show(str);
}

not sure whether this will post - had a technical difficulty replying to this thread.

[G1vDizwU]

Thank you both very much.