Answered: Can you explain the output step by…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

/ Can you explain the output step by step?

#include <iostream>
#include <vector>
using namespace std;
int f(int a, int b)
{
cout << a << " " << b << endl;
if (b == 0) return a;
return f(b, a % b);
}
struct C
{
int m = 9;
static int s;
C(C& c) { m *= c.m; }
C(int m) { this->m = m - s; }
C() { m++; }
C(int m, int n) { m += n; }
};
int C::s = 2;

using namespace std;

int main()
{
cout << f(21, 34) << endl; // (1) -- (10)
C w(1, 2), x(3), y, z(w);
w.s++;

double a = 42, * b = &a, & c = a, d = a;
cout << *b << endl; // (16)
cout << a-- << endl; // (17)
cout << c << endl; // (18)
cout << d << endl; // (19)
cout << (&c == b) << endl; // (20)

return 0;
}

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