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Full Discussion: size of char array in c
Top Forums Programming size of char array in c Post 302141933 by phani_sree on Tuesday 23rd of October 2007 01:03:29 PM
Old 10-23-2007
size of char array in c

i have to store a data more than 100000.
i don't know the size of the data whether it may be 100000 or 1000000.
so how can i define variable size;
example
char abc[1000000];
but i don't know the size so how can i give array size??
in one sentence
how can i give the array size dynamically so that i can store the data from 1 to an infinte characters
thank u
sree
 

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GLGETBUFFERSUBDATA(3G)						    OpenGL 3.3						    GLGETBUFFERSUBDATA(3G)

NAME
glGetBufferSubData - returns a subset of a buffer object's data store C SPECIFICATION
void glGetBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, GLvoid * data); PARAMETERS
target Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER, GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER, GL_TEXTURE_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER, or GL_UNIFORM_BUFFER. offset Specifies the offset into the buffer object's data store from which data will be returned, measured in bytes. size Specifies the size in bytes of the data store region being returned. data Specifies a pointer to the location where buffer object data is returned. DESCRIPTION
glGetBufferSubData returns some or all of the data from the buffer object currently bound to target. Data starting at byte offset offset and extending for size bytes is copied from the data store to the memory pointed to by data. An error is thrown if the buffer object is currently mapped, or if offset and size together define a range beyond the bounds of the buffer object's data store. NOTES
If an error is generated, no change is made to the contents of data. ERRORS
GL_INVALID_ENUM is generated if target is not GL_ARRAY_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, or GL_PIXEL_UNPACK_BUFFER. GL_INVALID_VALUE is generated if offset or size is negative, or if together they define a region of memory that extends beyond the buffer object's allocated data store. GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to target. GL_INVALID_OPERATION is generated if the buffer object being queried is mapped. SEE ALSO
glBindBuffer(), glBufferData(), glBufferSubData(), glMapBuffer(), glUnmapBuffer() COPYRIGHT
Copyright (C) 2005 Addison-Wesley. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/. OpenGL 3.3 03/08/2011 GLGETBUFFERSUBDATA(3G)
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