fopen increment

[manju 3]

Hi all, I am using fwrite to save some images in while loop. so i a can increment the file in fopen.. like 1.raw,2.raw...3....10 As first paramater is taking const char*. If i take as a CString i am not able to get.

I tried the below code
CString FileName = "D:\\"
sprintf_s(ch,"%d",i++);
FileName=ch;
FileName+=".raw";
FileName=str+FileName;
then converted CString to char*
const TCHAR* cstr = (LPCTSTR)FileName;

It is showing as bad pointer Is there any other way to increment the file name and save all images Here is the Below code:

FILE *fp_ara;
while(1)
{
fp_ara=fopen ("D:\\1.raw","wb");
fwrite(Data,2,1024*1024,fp_ara);
if(fp_ara == NULL)
exit(1);
fclose(fp_ara);
}

Thank you Sharan

[Maximilien]

me think you are over-complicating things. how about something like :

for (int i = 0; i < numberOfFile; i++ )
{
CString filename;
filename.Format("c:\\path\\to\\file\\%i.raw", i);

FILE* fp = fopen( filename, ... );
/// ... save
fclose(fp);
}

Watched code never compiles.

[_Superman_]

I would like to add here that by default the unicode version of CString will be used. This means that you're mixing unicode and non-unicode strings in your code. This will not give you the desired results. If you only want non-unicode characters, you can use CStringA instead of CString. If you want unicode characters, then you will need to change const char* to const wchar_t*, fopen to wfopen and prefix strings with L (L".raw").

«_Superman_»  _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++)

Polymorphism in C