There is an array of structures:

struct schoolboy
{
public:
  char firstName [30];
  char secondName [30];
  char addres [50];
  int schoolNumber;
  int schoolclass;
  schoolboy input (schoolboy * base);
  schoolboy recording (schoolboy * base, schoolboy * record, int number);
};

Here’s the implementation:

int main () {
  int number;
  setlocale (LC_ALL, "Rus");
  cout & lt; & lt; "Enter a number" & lt; & lt; endl;
  cin & gt; & gt; number;
  schoolboy base [28], record [28], a;
  a.input (base);
  a.recording (base, record, number);
  recordOut (record);
  system ("pause");
  return 0;
}

And here is the problematic function, the problem is in strcpy :

schoolboy schoolboy :: recording (schoolboy * base, schoolboy * record, int
number)
{
if (base- & gt; schoolNumber == number)
{
  if (base- & gt; schoolclass == 10 || base- & gt; schoolclass == 11)
  {
  cout & lt; & lt; "1" & lt; & lt; endl;
  for (int i = 0; i & lt; 2; i ++)
  {
    strcpy (record [i] .firstName, base [i] .firstName); // error here
    strcpy (record [i] .secondName, base [i] .secondName);
    strcpy (record [i] .addres, base [i] .addres);
  }
  }
  else
  {
    cout & lt; & lt; "Haven't 10 or 11 class" & lt; & lt; endl;
    return * base;
  }
 }
 else
 {
  cout & lt; & lt; "Not found" & lt; & lt; endl;
  return * base;
 }
 return * record;

How to fix the error? And could you give some advice on how to implement functions from structures in the “main”.

Error:

error C4996: 'strcpy': This function or variable may be unsafe.
Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS.

Answer 1, authority 100%

Replace all strcpy with strcpy_s.

Answer 2

If you don’t want to deal with studio troubles, there is another way. In the project settings, specify this as a predefined macro:

# define _CRT_SECURE_NO_WARNINGS

Or you can add this to the top of the file.