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Full Discussion: Passing two dimensional array to a function
Top Forums Programming Passing two dimensional array to a function Post 302532093 by Shang on Sunday 19th of June 2011 08:37:55 PM
Old 06-19-2011
Passing two dimensional array to a function
Hi.
I have a problem with passing two dimensional array to a function.

First, let me show my code to explain what i am going to do:
I have function:
Code:
void initialize_board(char board[][BOARD_SIZE]);

which is supposed to modify content of passed array. I have read here: Question 6.18 how such arrays should be passed. This is how I call my function:
Code:
initialize_board(all_games[slot].board);

according to what mentioned FAQ says.
all_games is a pointer to array of structures, so all_games[slot] is one of this array element and board is a member of structure.
The problem is that I am not sure about it. Is this all_games[slot].board passed by value or reference? I need to keep modifications after function initialize_board finishes, so I should probably use some pointers, but I have no idea how.
Do you have any ideas?
 

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LEARN ABOUT CENTOS

slacpy.f

slacpy.f(3)							      LAPACK							       slacpy.f(3)

NAME

       slacpy.f -

SYNOPSIS

   Functions/Subroutines
       subroutine slacpy (UPLO, M, N, A, LDA, B, LDB)
	   SLACPY copies all or part of one two-dimensional array to another.

Function/Subroutine Documentation
   subroutine slacpy (characterUPLO, integerM, integerN, real, dimension( lda, * )A, integerLDA, real, dimension( ldb, * )B, integerLDB)
       SLACPY copies all or part of one two-dimensional array to another.

       Purpose:

	    SLACPY copies all or part of a two-dimensional matrix A to another
	    matrix B.

       Parameters:
	   UPLO

		     UPLO is CHARACTER*1
		     Specifies the part of the matrix A to be copied to B.
		     = 'U':	 Upper triangular part
		     = 'L':	 Lower triangular part
		     Otherwise:  All of the matrix A

	   M

		     M is INTEGER
		     The number of rows of the matrix A.  M >= 0.

	   N

		     N is INTEGER
		     The number of columns of the matrix A.  N >= 0.

	   A

		     A is REAL array, dimension (LDA,N)
		     The m by n matrix A.  If UPLO = 'U', only the upper triangle
		     or trapezoid is accessed; if UPLO = 'L', only the lower
		     triangle or trapezoid is accessed.

	   LDA

		     LDA is INTEGER
		     The leading dimension of the array A.  LDA >= max(1,M).

	   B

		     B is REAL array, dimension (LDB,N)
		     On exit, B = A in the locations specified by UPLO.

	   LDB

		     LDB is INTEGER
		     The leading dimension of the array B.  LDB >= max(1,M).

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 104 of file slacpy.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       slacpy.f(3)
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