A constructor is used to allocate the memory for the newly created object. A constructor has the same name with the class.
If a class does not have any constructor, the default constructor is provided.
In the following code we have shown how to create objects of a class.
#include <iostream>
using namespace std;
class Test {
int x, y;
};
int main() {
Test t1;
Test t2();
return 0;
}
Parameterized Constructor
#include <iostream>
using namespace std;
class Test {
int x, y;
public:
Test(int x, int y) {
this -> x = x;
this -> y = y;
}
void print() {
cout << x << " " << y << endl;
}
};
int main() {
Test t1(5, 7);
t1.print();
return 0;
}
Constructor Overloading
#include <iostream>
using namespace std;
class Test {
int x, y;
public:
Test(int x) {
this -> x = x;
this -> y = 0;
}
Test(int x, int y) {
this -> x = x;
this -> y = y;
}
void print() {
cout << x << " " << y << endl;
}
};
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