Нагруженность процессора

#include <Windows.h>
#include <iostream>
#include <cstdlib>
using namespace std;
 
static float CalculateCPULoad();
static unsigned long long FileTimeToInt64();
float GetCPULoad();
 
 
int main()
{
    int _c = 0;
 
    while (_c == 0)
    {
        cout << GetCPULoad() * 100 << "\n";
        Sleep(1000);
    }
 
    return 0;
}
 
 
static float CalculateCPULoad(unsigned long long idleTicks, unsigned long long totalTicks)
{
    static unsigned long long _previousTotalTicks = 0;
    static unsigned long long _previousIdleTicks = 0;
 
    unsigned long long totalTicksSinceLastTime = totalTicks - _previousTotalTicks;
    unsigned long long idleTicksSinceLastTime = idleTicks - _previousIdleTicks;
 
 
    float ret = 1.0f - ((totalTicksSinceLastTime > 0) ? ((float)idleTicksSinceLastTime) / totalTicksSinceLastTime : 0);
 
    _previousTotalTicks = totalTicks;
    _previousIdleTicks = idleTicks;
    return ret;
}
 
static unsigned long long FileTimeToInt64(const FILETIME & ft)
{
    return (((unsigned long long)(ft.dwHighDateTime)) << 32) | ((unsigned long long)ft.dwLowDateTime);
}
 
// Returns 1.0f for "CPU fully pinned", 0.0f for "CPU idle", or somewhere in between
// You'll need to call this at regular intervals, since it measures the load between
// the previous call and the current one.  Returns -1.0 on error.
float GetCPULoad()
{
    FILETIME idleTime, kernelTime, userTime;
    return GetSystemTimes(&idleTime, &kernelTime, &userTime) ? CalculateCPULoad(FileTimeToInt64(idleTime), FileTimeToInt64(kernelTime) + FileTimeToInt64(userTime)) : -1.0f;
}