#include <iostream>

#include <vector>

#include <string>

// Used to keep track of object creation and destruction

class Tracker {

std::string name;

public:

Tracker(const std::string& s): name(s) {

std::cout << "Creating Tracker (" << name << ")\n";

}

~Tracker() {

std::cout << "Destroying Tracker (" << name << ")\n";

}

};

bool find(const std::vector<int>& v, int lower, int upper) {

std::cout << "------[Entering find]------\n";

Tracker obj("find"); // Local tracking object

bool result = false; // Not there by default

int seek; // What to look for

std::cout << "Enter item to locate: ";

std::cin >> seek;

for (int i = lower; i < upper; i++)

if (v.at(i) == seek) {

result = true; // Found it

break;

}

std::cout << "------[Leaving find]------\n";

return result;

}

void process(const std::vector<int>& v) {

std::cout << "------[Entering process]------\n";

Tracker obj("process"); // Local tracking object

int low, high;

std::cout << "Enter a range: ";

std::cin >> low >> high;

if (find(v, low, high))

std::cout << "Found it\n";

else

std::cout << "Not there\n";

std::cout << "------[Leaving process]------\n";

}

// Global tracking object

Tracker obj("global");

int main() {

std::cout << "------[Entering main]------\n";

Tracker obj("main"); // Local tracking object

std::vector<int> nums { 11, 42, 23 };

try {

process(nums);

}

catch (std::exception& e) {

std::cout << "nums vector bounds exceeded\n";

}

std::cout << "------[Leaving main]------\n";

}