Example: Basic Code Timer in C++

// Basic Code Timer
#include <iostream>
#include <chrono> // For timing utilities
#include <thread> // For std::this_thread::sleep_for
#include <vector> // For example task

using namespace std;

// User-defined material: A simple function that simulates work
void simulateWork(int iterations) {
    long long sum = 0;
    for (int i = 0; i < iterations; ++i) {
        sum += i;
    }
    // To prevent compiler optimizing out the loop entirely
    if (sum == -1) { 
        cout << "Impossible path." << endl;
    }
}

int main() {
    cout << "--- Basic Timing Example ---" << endl;

    // Step 1: Record the starting time
    auto start = chrono::high_resolution_clock::now();

    // Step 2: Execute the user-defined material (our simulateWork function)
    cout << "Simulating work with 1,000,000 iterations..." << endl;
    simulateWork(1000000); // Call our function

    // Or, time a simple sleep
    // cout << "Sleeping for 100 milliseconds..." << endl;
    // this_thread::sleep_for(chrono::milliseconds(100));

    // Step 3: Record the ending time
    auto end = chrono::high_resolution_clock::now();

    // Step 4: Calculate the duration
    chrono::duration<double> duration = end - start;

    // Step 5: Output the duration in desired units (e.g., microseconds, milliseconds, seconds)
    // We can cast to specific duration types for cleaner output
    auto microseconds = chrono::duration_cast<chrono::microseconds>(duration);
    auto milliseconds = chrono::duration_cast<chrono::milliseconds>(duration);

    cout << "SimulateWork took: " << microseconds.count() << " microseconds." << endl;
    cout << "SimulateWork took: " << milliseconds.count() << " milliseconds." << endl;

    // Example with another task
    cout << "\nSimulating work with 50,000,000 iterations..." << endl;
    start = chrono::high_resolution_clock::now();
    simulateWork(50000000); 
    end = chrono::high_resolution_clock::now();
    microseconds = chrono::duration_cast<chrono::microseconds>(end - start);
    cout << "SimulateWork took: " << microseconds.count() << " microseconds." << endl;

    return 0;
}