C / C++ / MFC

memcpy(&tmpBuffer[4], &strGetName, 6);

::memcpy(&tmpBuffer[0], &iReq, 4);
::memcpy(&tmpBuffer[4], &strGetName, 6);

I appreciate your help all the time...
Eranga

::memcpy(&tmpBuffer[0], &iReq, 4);<br />
::memcpy(&tmpBuffer[sizeof(int)], &strGetName, 6);

Haroon Sarwar wrote:

a good idea would be to use sizeof, ie:

::memcpy(&tmpBuffer[0], &iReq, 4);
::memcpy(&tmpBuffer[sizeof(int)], &strGetName, 6);

memcpy(&tmpBuffer[0], &iReq, sizeof(int) );
memcpy(&tmpBuffer[0 + sizeof(int)], &strGetname, 6);

Maxwell Chen wrote:

Refined as below:

memcpy(&tmpBuffer[0], &iReq, sizeof(int) );
memcpy(&tmpBuffer[0 + sizeof(int)], &strGetname, 6);

memcpy(&tmpBuffer[0], &iReq, sizeof(iReq) );
memcpy(&tmpBuffer[0 + sizeof(iReq)], &strGetname, 6);

CPallini wrote:

Further refined as
memcpy(&tmpBuffer[0], &iReq, sizeof(iReq) );
memcpy(&tmpBuffer[0 + sizeof(iReq)], &strGetname, 6);

char* tmpBuffer = new char[sizeof(iReq) + strlen(strGetName)];
memcpy(&tmpBuffer[0], &iReq, sizeof(iReq) );
memcpy(&tmpBuffer[0 + sizeof(iReq)], &strGetName, strlen(strGetName) );

Maxwell Chen wrote:

Even more:

char* tmpBuffer = new char[sizeof(iReq) + strlen(strGetName)];
memcpy(&tmpBuffer[0], &iReq, sizeof(iReq) );
memcpy(&tmpBuffer[0 + sizeof(iReq)], &strGetName, strlen(strGetName) );

char* tmpBuffer = new char[sizeof(iReq) + strlen(strGetName)];
if (tmpBuffer)
{
  memcpy(&tmpBuffer[0], &iReq, sizeof(iReq) );
  memcpy(&tmpBuffer[0 + sizeof(iReq)], &strGetName, strlen(strGetName) );
}
...
...
if (tmpBuffer) delete [] tmpBuffer;

Eranga Thennakoon wrote:

Why is that. I know that sizeof(int) also gives the number 4. But why I can't use number 4 directly. Any special reason.

Eranga Thennakoon wrote:

::memcpy(tmpBuffer, &iReq, 4);
::memcpy(tmpBuffer, &strGetName, 6);

// complexities left to reader
memcpy(tmpBuffer, &iReq, 4);
memcpy(tmpBuffer+4, strGetName, 6);

Eranga Thennakoon wrote:

Any way pointing the buffer make correction to me, as on my second post. It is ok, right....

subramanyeswari wrote:

"\n#DIR A320\n 4.2 Micro Computer Test %02d.%02d.%04d %02d:%

char MC_320_ATP[] = "\n#DIR A320\n 4.2 Micro Computer Test %02d.%02d.%04d %02d:% \<br />
		02d:%02d";

extern const char *MC_320_API;