Welcome to the "STL Time Library" section of the "STL Library" lesson!
As a senior engineer interested in networking and engineering in C++ as it pertains to finance, the time library in the STL provides functionality for working with time and dates in C++.
Let's take a look at an example:
TEXT/X-C++SRC
1#include <iostream>
2#include <ctime>
3
4int main() {
5 // Get current system time
6 time_t now = time(0);
7
8 // Convert now to string form
9 char* dt = ctime(&now);
10
11 // Print the current time
12 std::cout << "The current date and time is: " << dt;
13
14 // Convert now to tm struct for UTC
15 tm* gmtm = gmtime(&now);
16 dt = asctime(gmtm);
17
18 // Print the current UTC time
19 std::cout << "The current UTC date and time is: " << dt;
20
21 // Convert now to tm struct for local timezone
22 tm* ltm = localtime(&now);
23 dt = asctime(ltm);
24
25 // Print the current local time
26 std::cout << "The current local date and time is: " << dt;
27
28 return 0;
29}xxxxxxxxxx29
int main() { // Get current system time time_t now = time(0); // Convert now to string form char* dt = ctime(&now); // Print the current time std::cout << "The current date and time is: " << dt; // Convert now to tm struct for UTC tm* gmtm = gmtime(&now); dt = asctime(gmtm); // Print the current UTC time std::cout << "The current UTC date and time is: " << dt; // Convert now to tm struct for local timezone tm* ltm = localtime(&now); dt = asctime(ltm); // Print the current local time std::cout << "The current local date and time is: " << dt; return 0;}OUTPUT
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