How to iterate through a list of objects in C

Question

I m very new to C   and struggling to figure out how I should iterate through a list of objects and access there members   I ve been trying this where data is the list and student a class   std  list lt Student gt   iterator lt Student gt  it  for it   data begin    it    data end      it       std  cout lt  lt   it - gt name      and getting the following error  error  base operand of    - gt     has non-pointer type    Student

User · Answer

if you add an  include  lt algorithm gt  then you can use the for each function and a lambda function like so   for each data begin    data end       Student  it         std  cout lt  lt it- gt name        you can read more about the algorithm library at https   en cppreference com w cpp algorithm  and about lambda functions in cpp at https   docs microsoft com en-us cpp cpp lambda-expressions-in-cpp view vs-2019

User · Answer

You re close   std  list lt Student gt   iterator it  for  it   data begin    it    data end      it       std  cout  lt  lt  it- gt name      Note that you can define it inside the for loop   for  std  list lt Student gt   iterator it   data begin    it    data end      it       std  cout  lt  lt  it- gt name      And if you are using C  11 then you can use a range-based for loop instead   for  auto const amp  i   data        std  cout  lt  lt  i name      Here auto automatically deduces the correct type  You could have written Student const amp  i instead

User · Answer

It is also worth to mention  that if you DO NOT intent to modify the values of the list  it is possible  and better  to use the const iterator  as follows   for  std  list lt Student gt   const iterator it   data begin    it    data end      it          do whatever you wish but don t modify the list elements     std  cout  lt  lt  it- gt name

User · Answer

Since C   11  you could do the following   for const auto amp  student   data      std  cout  lt  lt  student name  lt  lt  std  endl

User · Answer

-  it works like pointer u don t have to use    for  list lt student gt   iterator iter  data begin    iter    data end    iter     cout lt  lt iter- gt name     iter  not  it

[c++] How to iterate through a list of objects in C++

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