C

struct

#include <stdio.h>

main () {
	struct person {
		char[] name;
		int age;
	}
}

struct in struct

// C program to implement
// the above approach
#include <stdio.h>
#include <string.h>

// Declaration of the
// dependent structure
struct Employee
{
  int employee_id;
  char name[20];
  int salary;
};

// Declaration of the
// Outer structure
struct Organisation
{
  char organisation_name[20];
  char org_number[20];

  // Dependent structure is used
  // as a member inside the main
  // structure for implementing
  // nested structure
  struct Employee emp;
};

// Driver code
int main()
{
  // Structure variable
  struct Organisation org;

  // Print the size of organisation
  // structure
  printf("The size of structure organisation : %ld
",
          sizeof(org));

  org.emp.employee_id = 101;
  strcpy(org.emp.name, "Robert");
  org.emp.salary = 400000;
  strcpy(org.organisation_name,
          "GeeksforGeeks");
  strcpy(org.org_number, "GFG123768");


  // Printing the details
  printf("Organisation Name : %s
",
          org.organisation_name);
  printf("Organisation Number : %s
",
          org.org_number);
  printf("Employee id : %d
",
          org.emp.employee_id);
  printf("Employee name : %s
",
          org.emp.name);
  printf("Employee Salary : %d
",
          org.emp.salary);
}

struct

public struct S : IDisposable
    {
        private bool dispose;
        public void Dispose()
        {
            dispose = true;
        }
        public bool GetDispose()
        {
            return dispose;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var s = new S(); 
            using (s)
            {
                Console.WriteLine(s.GetDispose());
            }
            Console.WriteLine(s.GetDispose());
        }
        /*result
         False
        False
         */
    }