Local vs Global Object in C++

In the C++ language generally we create an object of class in a main() function or member function but it is also possible to create a object globally.

Such object are called global object.

Example: Write a C++ program to show the difference between local and global object.

#include <iostream>

using namespace std;

class zzz {
    public:
        void show(int x) {
            cout << " x= " << x;
        }
};
zzz a; //  creating global object “a”.

int main() {
    zzz O; // creating local object “O”
    a.show(10); // call using global object
    O.show(5); // call using local object
}

#include <iostream>

using namespace std;

class zzz {

public:

void show(int x) {

cout << " x= " << x;

}

};

zzz a; // creating global object “a”.

int main() {

zzz O; // creating local object “O”

a.show(10); // call using global object

O.show(5); // call using local object

}

Output

x=10    x=5

x=10 x=5