Construtor and Destructor are special class member function in C++ where, classname and method names are same and for destructors we use the symbol (~) infornt of classname.
class class_name {
//private data members
//public data members
//Constructor
class_name(parameter_list(s)) {
//constructor body
}
};#include <iostream>
using namespace std;
class Student{
public:
int roll;
// declaring constructor
Student() {
roll = 12;
}
};
int main() {
Student std;
cout << "The roll number is = " << std.roll;
return 0;
}#include <iostream>
using namespace std;
class Student{
public:
int roll;
// declaring constructor
Student();
};
Student::Student() {
roll = 12;
}
int main() {
Student std;
cout << "The roll number is = " << std.roll;
return 0;
}