Does constructor parameter initialization list works different from using assignment operator inside the constructor?
I have the following code:
class Person1
{
public:
int age;
string name;
double weight;
double height;
Person1();
Person1(int age, string name, double weight, double height);
};
Person1::Person1()
{
}
Person1::Person1(int age, string name, double weight, double height)
//: m_age{age}, m_name{name}, m_weight{weight}, m_height{height}
{
// this->age = age;
// this->name = name;
// this->height = height;
// this->weight = weight;
age = age;
name = name;
height = height;
weight = weight;
}
void ModifyPerson1(Person1 person1)
{
person1.name = "Jerry";
cout << person1.age << " " << person1.name << " " << person1.weight << " " << person1.height << endl;
}
int main()
{
Person1 person1(15,"Tom",140,5);
cout << person1.age << " " << person1.name << " " << person1.weight << " " << person1.height << endl;
ModifyPerson1(person1);
cout << "Name after modification : " << person1.name << endl;
return 0;
}
The OP for the above code is :
-272632464 6.95313e-310 2.12202e-314
-272632464 Jerry 6.95313e-310 2.12202e-314
Name after modification :
Program ended with exit code: 0
If I use the either the initialization list or this-> operator for the constructor, the output is as expected:
15 Tom 140 5
15 Jerry 140 5
Name after modification : Tom
Program ended with exit code: 0
I am seriously not able to understand why the behavior differs.
