Weird behaviour with fread

Question

I'm reading a binary uint32_t data from a file that indicates the size of the next binary block, after that I read that block but the reading pointer is "moving" wrong.

FILE* file = fopen("file.zip", "r");
long pointerA = ftell(file);
uint32_t streamSize = 0;
fread(reinterpret_cast<char*>(&streamSize), sizeof streamSize,1,file);
long pointerB = ftell(file);
char* zipData = new char[streamSize];
fread(zipData, sizeof(char),streamSize,file);

long pointerC = ftell(file);
fseek( file, pointerA + 4 + streamSize, SEEK_SET );
long pointerD = ftell(file);
qDebug()<<"streamSize"<<streamSize<<"Positions"<<pointerA<<pointerB<<pointerC<<pointerD;

PointerA is the original position, PointerB the position after reading that uint32_t, PointerC is the pointer after reading all that binary data and PointerD is just a check about what I suppose that should be the right behaviour.

Now let's see the debug:

streamSize 2653 Positions 151 156 4627 2808

Why the stream read position has moved too 4627 instead 2808?

Thank you in advance for any tip!

Answer 1

Both users @alan-birtles and @remy-lebeau were right, I opened it as text instead binary that was the issue.

Unfortunatly I cannot mark this as solved.

PS. For begginers this means open file with "rb" instead "r".