#include <iostream>
#include <vector>
 
class foo {
public:
    int m_data;
    foo(int data) : m_data(data) {
        std::cout << "parameterised constructor" << std::endl;
    }
    foo(const foo &other) : m_data(other.m_data) {
        std::cout << "copy constructor" << std::endl;
    }
 
    foo &operator=(const foo &rhs) {
        m_data = rhs.m_data;
	std::cout << "copy assignment" << std::endl;
    }
};
 
main (int argc, char *argv[]) {
    std::vector<foo> a(3, foo(3));
    //std::vector<foo> b(4, foo(4));
    std::vector<foo> b(3, foo(4));
    std::cout << "a = b" << std::endl;
    a = b;
    return 0;
}

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