0

我在这里查看此代码:

#include <stdio.h>
#include <gsl/gsl_rng.h>
#include <gsl/gsl_randist.h>
#include <gsl/gsl_permutation.h>



int main ( ) {
    const long N = 10;
    const gsl_rng_type *T = NULL;
    gsl_rng *r = NULL;

    gsl_permutation *p = NULL;
    p = gsl_permutation_alloc ( N );
    gsl_permutation *q = NULL;
    q = gsl_permutation_alloc ( N );

    gsl_rng_env_setup ();
    T = gsl_rng_default;
    r = gsl_rng_alloc ( T );

    printf ( "initial permutation: " );
    gsl_permutation_init ( p );
    gsl_permutation_fprintf ( stdout, p, " %u" );
    printf ( "\n" );

    printf (" random permutation:");  
    gsl_ran_shuffle (r, p->data, N, sizeof(size_t));
    gsl_permutation_fprintf (stdout, p, " %u");
    printf ("\n");

    printf ( "inverse permutation: " );
    gsl_permutation_inverse ( q, p );
    gsl_permutation_fprintf ( stdout, q, "%u" );
    printf ( "\n" );

    gsl_permutation_free ( p );
    gsl_permutation_free ( q );

    return 0;
}

但是,当我尝试编译它时,我得到未处理的异常:访问冲突写入位置错误。我相信,我为所有指针分配了内存,但是错误仍然存​​在。我对C不太熟悉,所以,任何输入都会受到赞赏。PS当我使用调试器时,它指向这一行:gsl_permutation_fprintf ( stdout, p, " %u" ); 谢谢

编辑:我玩过代码并意识到问题可能出在 stdout 语句中。

4

1 回答 1

0

不应该gsl_rng_env_setup ();首先调用吗?你之前做了几个gsl_permutation_alloc

于 2011-10-13T05:59:35.543 回答