h5tutr_rdwt.cpp

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.						     *
 * Copyright by the Board of Trustees of the University of Illinois.	     *
 * All rights reserved.							     *
 *	                                                                     *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 *  This example illustrates how to write to and read from an existing
 *  dataset. It is used in the HDF5 Tutorial.
 */

#include <iostream>
#include <string>
#include "H5Cpp.h"
using namespace H5;

const H5std_string	FILE_NAME("h5tutr_dset.h5");
const H5std_string	DATASET_NAME("dset");
const int 	DIM0 = 4;	               // dataset dimensions
const int 	DIM1 = 6;

int main (void)
{
    
    // Data initialization.
     
    int i, j;
    int data[DIM0][DIM1];	    // buffer for data to write

    for (j = 0; j < DIM0; j++)
	for (i = 0; i < DIM1; i++)
	 data[j][i] = i * 6 + j + 1;

    // Try block to detect exceptions raised by any of the calls inside it
    try
    {
	// Turn off the auto-printing when failure occurs so that we can
	// handle the errors appropriately
	Exception::dontPrint();

	// Open an existing file and dataset.
	H5File file(FILE_NAME, H5F_ACC_RDWR);
	DataSet dataset = file.openDataSet(DATASET_NAME);

	// Write the data to the dataset using default memory space, file
	// space, and transfer properties.
	dataset.write(data, PredType::NATIVE_INT);

    }  // end of try block

    // catch failure caused by the H5File operations
    catch(FileIException error)
    {
	error.printErrorStack();
	return -1;
    }

    // catch failure caused by the DataSet operations
    catch(DataSetIException error)
    {
	error.printErrorStack();
	return -1;
    }

    return 0;  // successfully terminated
}