double型怎样转换成char型附源码

haidong2008

//////////////////////////////////////////////////////////////////////////////
//
//  5.cpp
//
//  Description:
//      Contains Unigraphics entry points for the application.
//
//////////////////////////////////////////////////////////////////////////////
//  Include files
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <uf.h>
#include <uf_disp.h>
#include <uf_modl.h>
#include <uf_ui.h>
#include <uf_object_types.h>
#if ! defined ( __hp9000s800 ) && ! defined ( __sgi ) && ! defined ( __sun )
# include <strstream>
#   include <iostream>
using std:strstream;
using std::endl;
using std::ends;
using std::cerr;
#else
# include <strstream.h>
#   include <iostream.h>
#endif
#include "6.h"
//----------------------------------------------------------------------------
//  Activation Methods
//----------------------------------------------------------------------------
//  Unigraphics Startup
//      This entry point activates the application at Unigraphics startup
extern "C" DllExport void ufsta( char *param, int *returnCode, int rlen )
{
    /* Initialize the API environment */
    int errorCode = UF_initialize();
    if ( 0 == errorCode )
    {
  tag_t block_max;
  double block_orig[3]={0.0,0.0,0.0};
  double x=100.0,y=100.0,z=100.0;
  char   mx [256];
  char   my [256];
  char   mz [256];
  char * block_len[3];
  sprintf(mx,"x的边长是:%f\n",x);
  sprintf(my,"y的边长是:%f\n",y);
  sprintf(mz,"x的边长是:%f\n",z);
  UF_UI_open_listing_window();
  UF_UI_write_listing_window(mx);
  UF_UI_write_listing_window(my);
  UF_UI_write_listing_window(mz);
  block_len[0]=mx;
  block_len[1]=my;
  block_len[2]=mz;
  UF_FEATURE_SIGN sign=UF_NULLSIGN;
  UF_MODL_create_block1(sign,block_orig,block_len,&block_max);
        errorCode = UF_terminate();
    }
    /* Print out any error messages */
    PrintErrorMessage( errorCode );
}
//----------------------------------------------------------------------------
//  Utilities
//----------------------------------------------------------------------------
// Unload Handler
//     This function specifies when to unload your application from Unigraphics.
//     If your application registers a callback (from a MenuScript item or a
//     User Defined Object for example), this function MUST return
//     "UF_UNLOAD_UG_TERMINATE".
extern "C" int ufusr_ask_unload( void )
{
    return( UF_UNLOAD_UG_TERMINATE );
}
/* PrintErrorMessage
**
**     Prints error messages to standard error and the Unigraphics status
**     line. */
static void PrintErrorMessage( int errorCode )
{
    if ( 0 != errorCode )
    {
        /* Retrieve the associated error message */
        char message[133];
        UF_get_fail_message( errorCode, message );
        /* Print out the message */
        UF_UI_set_status( message );
        // Construct a buffer to hold the text.
        ostrstream error_message;
        // Initialize the buffer with the required text.
        error_message << endl
                      << "Error:" << endl
                      << message
                      << endl << endl << ends;
     // Write the message to standard error
        cerr << error_message.str();
    }
}

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