Question

How to get time in milliseconds since the Unix epoch (January 1, 1970) using chrono in C++

Answer 1

#include <iostream>
#include <chrono> 

uint64_t GetMillisecondsSinceEpoch() { 
    using namespace std::chrono; 
    return duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count(); 
}

int main() { 
    uint64_t millisec = GetMillisecondsSinceEpoch(); 
    
    std::cout << "Milliseconds since Unix epoch: " << millisec; 
}



/*
run:
 
Milliseconds since Unix epoch: 1734600373400

*/

 

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