如何在 Linux 和 Windows 中测量 CPU 和挂钟时间？

#include <iostream>
#include <chrono>

using namespace std;

int main() {
  // Declare variables to measure time
  auto startCPU = chrono::high_resolution_clock::now();
  auto startWall = chrono::system_clock::now();

  // Perform some CPU-intensive computations here

  // Stop time measurements
  auto endCPU = chrono::high_resolution_clock::now();
  auto endWall = chrono::system_clock::now();

  // Calculate CPU time
  chrono::duration<double> cpuTime = endCPU - startCPU;

  // Calculate wall clock time
  chrono::duration<double> wallClockTime = endWall - startWall;

  cout << "CPU Time: " << cpuTime.count() << " seconds" << endl;
  cout << "Wall Clock Time: " << wallClockTime.count() << " seconds" << endl;

  return 0;
}