strange situation in file

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Old 11-13-2007
strange situation in file

Hi All,

I am writing some data's into a file from C++ program. The files which i am writing is of fixed length . say 232 in length per line.
I am writing as . my c code is as

sprintf(szData1,"%.6d%-30s%-6s%-30s%-3s",m_nBrandCode,,,, ));

But after the file operation finished when i cheked the file the file is not in
fixed line length there are some junk character after the new line ("\n")
i mean that some lines are with 232 in length and some are with 233 in length . When i tried convert the line into HEXA decimamal value it is showing a apecial charater 00.

Why that is happening . PLease let me know

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GLINDEXMASK(3G) 														   GLINDEXMASK(3G)

glIndexMask - control the writing of individual bits in the color index buffers C SPECIFICATION
void glIndexMask( GLuint mask ) PARAMETERS
mask Specifies a bit mask to enable and disable the writing of individual bits in the color index buffers. Initially, the mask is all 1's. DESCRIPTION
glIndexMask controls the writing of individual bits in the color index buffers. The least significant n bits of mask, where n is the num- ber of bits in a color index buffer, specify a mask. Where a 1 (one) appears in the mask, it's possible to write to the corresponding bit in the color index buffer (or buffers). Where a 0 (zero) appears, the corresponding bit is write-protected. This mask is used only in color index mode, and it affects only the buffers currently selected for writing (see glDrawBuffer). Initially, all bits are enabled for writing. ERRORS
GL_INVALID_OPERATION is generated if glIndexMask is executed between the execution of glBegin and the corresponding execution of glEnd. ASSOCIATED GETS
glColorMask(3G), glDepthMask(3G), glDrawBuffer(3G), glIndex(3G), glIndexPointer(3G), glStencilMask(3G) GLINDEXMASK(3G)