Thread: How to detect CPU usage and free RAM on Windows x86 in C?

I don't use Visual Studio and/or C++ so I would like to do it without them. I found this article
c++ - How to determine CPU and memory consumption from inside a process? - Stack Overflow

I tried some lines of code but no one works for me.

Code:

#include "windows.h"

typedef struct _MEMORYSTATUSEX {
    DWORD dwLength;
    DWORD dwMemoryLoad;
    DWORDLONG ullTotalPhys;
    DWORDLONG ullAvailPhys;
    DWORDLONG ullTotalPageFile;
    DWORDLONG ullAvailPageFile;
    DWORDLONG ullTotalVirtual;
    DWORDLONG ullAvailVirtual;
    DWORDLONG ullAvailExtendedVirtual;
} MEMORYSTATUSEX, *LPMEMORYSTATUSEX;
WINBASEAPI
BOOL
WINAPI
GlobalMemoryStatusEx(
    IN OUT LPMEMORYSTATUSEX lpBuffer
    );


MEMORYSTATUSEX memInfo;
DWORDLONG totalPhysMem = memInfo.ullTotalPhys;
memInfo.dwLength = sizeof MEMORYSTATUSEX;
GlobalMemoryStatusEx(&memInfo);
DWORDLONG totalVirtualMem = memInfo.ullTotalPageFile;
DWORDLONG virtualMemUsed = memInfo.ullTotalPageFile - memInfo.ullAvailPageFile;

error: initializer element is not constant:
DWORDLONG totalPhysMem = memInfo.ullTotalPhys;

error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
memInfo.dwLength = sizeof MEMORYSTATUSEX;

These was just my first tries to work with da MEMORYSTATUSEX.

I would like to find out if there is free memory at least ... (some value) and similar.

Learn what a function is; then put your code in a function.

Tim S.