реализация

.vscode/settings.json

@@ -0,0 +1,67 @@
+{
+    "files.associations": {
+        "algorithm": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "cctype": "cpp",
+        "charconv": "cpp",
+        "chrono": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "exception": "cpp",
+        "format": "cpp",
+        "forward_list": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "ios": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "iterator": "cpp",
+        "limits": "cpp",
+        "locale": "cpp",
+        "map": "cpp",
+        "memory": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "optional": "cpp",
+        "ostream": "cpp",
+        "ratio": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "stop_token": "cpp",
+        "streambuf": "cpp",
+        "string": "cpp",
+        "system_error": "cpp",
+        "thread": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "typeinfo": "cpp",
+        "utility": "cpp",
+        "vector": "cpp",
+        "xfacet": "cpp",
+        "xiosbase": "cpp",
+        "xlocale": "cpp",
+        "xlocbuf": "cpp",
+        "xlocinfo": "cpp",
+        "xlocmes": "cpp",
+        "xlocmon": "cpp",
+        "xlocnum": "cpp",
+        "xloctime": "cpp",
+        "xmemory": "cpp",
+        "xstddef": "cpp",
+        "xstring": "cpp",
+        "xtr1common": "cpp",
+        "xtree": "cpp",
+        "xutility": "cpp"
+    }
+}

Makefile

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+CXX = g++
+CXXFLAGS = -Iinclude/
+
+all: my_app
+
+my_app:
+	$(CXX) $(CXXFLAGS) ./my_start.cpp ./my_fin.cpp ./main.cpp -o my_app
+
+rebuild:
+	rm -f my_app && make my_app
+
+clean:
+	rm -f my_app

main.cpp

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+#include <iostream>
+#include <thread>
+#include <chrono>
+#include "my_start.hpp"
+
+int main() {
+
+    my_start();
+
+    for (int i = 0; i < 5; ++i) {
+        std::this_thread::sleep_for(std::chrono::seconds(25));
+        if (i % 2 == 0) {
+            n_ok_requests++;
+        } else {
+            n_fail_requests++;
+        }
+    }
+
+    my_fin();
+
+    return 0;
+}

my_fin.cpp

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+#include "my_start.hpp"
+#include <cstdlib>
+
+void my_fin() {
+
+    auto end_timestamp = std::chrono::system_clock::now();
+    auto end_time_t = std::chrono::system_clock::to_time_t(end_timestamp);
+    auto end_ms = std::chrono::duration_cast<std::chrono::milliseconds>(end_timestamp.time_since_epoch()) % 1000;
+
+    auto duration = end_timestamp - start_timestamp;
+    auto hours = std::chrono::duration_cast<std::chrono::hours>(duration);
+    auto minutes = std::chrono::duration_cast<std::chrono::minutes>(duration % std::chrono::hours(1));
+    auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration % std::chrono::minutes(1));
+    auto milliseconds = std::chrono::duration_cast<std::chrono::milliseconds>(duration % std::chrono::seconds(1));
+
+    std::cout << "Worked for ";
+    if (duration < std::chrono::minutes(2)) {
+        double total_seconds = std::chrono::duration<double>(duration).count();
+        std::cout << std::fixed << std::setprecision(3) << total_seconds << " seconds";
+    } else {
+        if (hours.count() > 0) std::cout << hours.count() << "h ";
+        if (minutes.count() > 0) std::cout << minutes.count() << "m ";
+        std::cout << seconds.count() << "s " << milliseconds.count() << "ms";
+    }
+    std::cout << std::endl;
+
+    std::cout << "Sent " << (n_ok_requests + n_fail_requests) << " requests (" 
+              << n_ok_requests << " ok, " << n_fail_requests << " failed)" << std::endl;
+
+    std::cout << "DosAtk stopped at " << std::put_time(std::localtime(&end_time_t), "%Y-%m-%d %H:%M:%S")
+              << "." << std::setfill('0') << std::setw(3) << end_ms.count() << std::endl;
+
+    std::exit(0);
+}

my_start.cpp

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+#include "my_start.hpp"
+
+int n_ok_requests = 0;
+int n_fail_requests = 0;
+std::chrono::system_clock::time_point start_timestamp;
+
+void my_start() {
+    n_ok_requests = 0;
+    n_fail_requests = 0;
+    start_timestamp = std::chrono::system_clock::now();
+
+    auto now = std::chrono::system_clock::now();
+    auto now_time_t = std::chrono::system_clock::to_time_t(now);
+    auto now_ms = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()) % 1000;
+
+    std::cout << "Starting DosAtk at " << std::put_time(std::localtime(&now_time_t), "%Y-%m-%d %H:%M:%S")
+    << "." << std::setfill('0') << std::setw(3) << now_ms.count() << std::endl;
+}

my_start.hpp

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+#include <iostream>
+#include <chrono>
+#include <iomanip>
+#include <ctime>
+
+void my_start();
+void my_fin();
+
+extern int n_ok_requests;
+extern int n_fail_requests;
+extern std::chrono::system_clock::time_point start_timestamp;