How to access non-static data members in c++

Question

I am trying to access my systems temperature using this: http://www.alcpu.com/CoreTemp/developers.html

as you can see, the data structure is this:

typedef struct core_temp_shared_data
{
    unsigned int    uiLoad[256];
    unsigned int    uiTjMax[128];
    unsigned int    uiCoreCnt;
    unsigned int    uiCPUCnt;
    float       fTemp[256];
    float       fVID;
    float       fCPUSpeed;
    float       fFSBSpeed;
    float       fMultiplier;    
    char        sCPUName[100];
    unsigned char   ucFahrenheit;
    unsigned char   ucDeltaToTjMax;
}CORE_TEMP_SHARED_DATA,*PCORE_TEMP_SHARED_DATA,**PPCORE_TEMP_SHARED_DATA;

however, i am new to c++ programming and do not understand how to access the data of one of those things. i have tried this:

cout << core_temp_shared_data::fTemp;

but it just spits out this error code:

error: invalid use of non-static data member 'core_temp_shared_data::fTemp'|

what is a valid use?

Answer 1

Create a new object of that type, set the members to a meaningful value, and access it through the object.

core_temp_shared_data obj;
obj.fMultiplier = 0;
std::cout << obj.fMultiplier;

Answer 2

You need to create an instance of the struct/class like in C.

CORE_TEMP_SHARED_DATA shared_data;
shared_data.fVID = 0.5f;

Or via dynamic allocation:

PCORE_TEMP_SHARED_DATA shared_data = new CORE_TEMP_SHARED_DATA;
shared_data->fVID = 0.5f;