problem with buffer in fread and fwrite

[hamsha_ir]

Hi everyone I have some problem with fread and fwrite in VS2005 beta2 I have the following code, in it i generate a buffer and after assigning some values to it , i write it to a file , then i try to read it back to a new buffer which is not successful. for variable bigVal=100 i get "k=100" for writing but for reading i get "k=77" , i would be pleased if someone can help me. #include "stdafx.h" #include #include #include typedef double dtype; int _tmain(int argc, _TCHAR* argv[]) { dtype *b; int i,j,k; int bigVal; char filename[]="c:\\temp.data"; FILE *fp; bigVal=100; b=(dtype*) malloc(bigVal * sizeof(dtype)); for(i=0 ; i

[kakan]

Hello. I'm not sure if it's your only problem, but you should definately use binary mode for your files. So use: fopen(filename,"wb") and fopen(filename,"rb") Kakan

[Laxman9]

in fread and fwrite the first parameter is "void *" so try typecasting the first parameter as following fread((void*)b,sizeof(dtype),bigVal,fp); fwrite((void*)b,sizeof(dtype),bigVal,fp); it worked when i tried past.:) FAILURE is the first step towards SUCCESS