SystemMonitor (Windows C++)

A small Windows systems-style monitoring tool written in C++ that samples CPU and memory usage and logs results to a CSV file.

What it does

• Reads CPU utilization (%) using Windows GetSystemTimes (computed from time deltas).
• Reads memory utilization (%) using Windows GlobalMemoryStatusEx.
• Prints metrics to the console once per second.
• Logs metrics to a CSV file: timestamp,cpu_percent,mem_percent.
• Includes basic error handling so logging failures do not crash metric collection.
• Runs until the user presses any key.

Project structure

• src/
• main.cpp
• SystemMetrics.h/.cpp
• Logger.h/.cpp
• TimeUtil.h/.cpp

Build & run (Visual Studio)

1. Open Visual Studio (C++ desktop development installed).
2. Create a Console App (C++) project.
3. Add the files from src/ into your project (Source Files + Header Files).
4. Build and run.

Output

Console output (example):

2026-01-06 11:22:18 | CPU: 9.91% | MEM: 81.00%
2026-01-06 11:22:19 | CPU: 7.67% | MEM: 81.00%

Tech

• C++ (Visual Studio / MSVC)
• Windows API: GetSystemTimes, GlobalMemoryStatusEx