fwrite, fread and snprintf compile errors in linux

[ajaind]

I'm getting compile errors on ubuntu when compiling the following code

unsigned char* pBytes = new unsigned char[10000];

//code to fill pBytes with random characters

//pFile is of type FILE* obtained from opening a file.
size_t bytesWritten = fwrite(pBytes, 1, 10000, pFile);

I get the following error:

Invalid arguments '
Candidates are:
? fwrite(const void *, ?, ?, _IO_FILE *)
' Write.cpp /FileTest/src line 55 Semantic Error

I get a similar error with fread():

unsigned char* seqData = new unsigned char[10000];
size_t result = fread(seqData, 1, 10000, pFile);

Invalid arguments '
Candidates are:
? fread(void *, ?, ?, _IO_FILE *)
' Write.cpp /FileTest/src line 65 Semantic Error

I get a similar error with gethostname()

char name[50];
gethostname(name, sizeof(name));

Candidates are:
int gethostname(char *, ?)
' Write.cpp /FileTest/src line 77 Semantic Error

[Peter87]

You show the code for fwrite but the error is about fread.

Can you give a small example that compiles with the error that you want to show?

[ajaind]

Updated post.

The fwrite, fread code builds fine on Windows.