doc_src_qvarlengtharray.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QVarLengthArray>
 
#if 0
//! [0]
int myfunc_wrong(int n)
{
    int table[n + 1];  // WRONG
    //...
    return table[n];
}
//! [0]
#endif
 
//! [1]
int myfunc_correct(int n)
{
    int *table = new int[n + 1];
    //...
    int ret = table[n];
    delete[] table;
    return ret;
}
//! [1]
 
 
//! [2]
int myfunc_q(int n)
{
    QVarLengthArray<int, 1024> array(n + 1);
    //...
    return array[n];
}
//! [2]
 
 
void example()
{
    //! [3]
    QVarLengthArray<int> array(10);
    int *data = array.data();
    for (int i = 0; i < 10; ++i)
        data[i] = 2 * i;
    //! [3]
}