#includeThis code snippet creates a TStopwatch object and measures the time taken to perform a loop with a time-consuming operation. The RealTime() function returns the elapsed time in seconds as a double. Overall, TStopwatch is a useful tool for profiling and optimizing code, allowing the programmer to identify areas where the most time is being spent and make improvements accordingly.#include "TStopwatch.h" using namespace std; int main() { TStopwatch sw; sw.Start(); for(int i = 0; i < 1000000; i++) { // some time-consuming operation } sw.Stop(); cout << "Time elapsed: " << sw.RealTime() << " seconds" << endl; return 0; }