C struct - member function accessing variable of parent struct

Question

In C++ you could do:

class Person{
public:
    int ID;
    char* name;
    void Display(){
        cout << "Person " << name << " ID: " << ID << endl;
    }
}

Where the member function can access other variables in a class, is there anyway to do the same with a struct in C?

Answer 1

Your C++ code:

class Person {
public:
    int ID;
    char* name;
    void Display() {
        cout << "Person " << name << " ID: " << ID << endl;
    }
}
...
Person person;
...
person.Display();
...

In C there are no member functions, but similar code in C could look like this:

struct Person {
  int ID;
  char* name;
}

void Display(struct Person *this) {
   printf("Person %s ID: %d\n", this->name, this->ID);
}

...
struct Person person;
...
Display(&Person);
...

Answer 2

c is not a object oriented language, but you can do something like this.

#include<stdio.h>  
#include <string.h>

typedef void (*DoRunTimeChecks)();

struct student  
{  
    char name[20];  
    DoRunTimeChecks func;
};  

void Print(char name[])
{
    printf("Printing student information\n");  
    printf("Name: %s",name);  
}

void main ()  
{  
    struct student s = {"shriram", Print}; 
    s.func = Print;
    s.func(s.name);
}