/*****************************************************************************
**
** NX8_Open1.c
**
** Description:
**     Contains Unigraphics entry points for the application.
**
*****************************************************************************/

/* Include files */
#include <stdio.h>
#include <uf.h>
#include <uf_ui.h>
#include "stdio.h"
#include "math.h"
#include "string.h"
#define UF_CALL(X) (report_error( __FILE__, __LINE__, #X, (X)))
FILE*fp;
int i,gcode;
char fname[14],gvalue[65];
float xs[100],ys[100],zs[100],xe[100],ye[100],ze[100];


static int report_error( char *file, int line, char *call, int irc)
{
    if (irc)
    {
        char err[133],
             msg[133];

        sprintf(msg, "*** ERROR code %d at line %d in %s:\n+++ ",
            irc, line, file);
        UF_get_fail_message(irc, err);

        UF_print_syslog(msg, FALSE);
        UF_print_syslog(err, FALSE);
        UF_print_syslog("\n", FALSE);
        UF_print_syslog(call, FALSE);
        UF_print_syslog(";\n", FALSE);

        if (!UF_UI_open_listing_window())
        {
            UF_UI_write_listing_window(msg);
            UF_UI_write_listing_window(err);
            UF_UI_write_listing_window("\n");
            UF_UI_write_listing_window(call);
            UF_UI_write_listing_window(";\n");
        }
    }

    return(irc);
}

int scanline()
{
    printf("Enter DXF file name:");
    scanf("%s",fname);
    strcat(fname,".dxf");
    fp=fopen(fname,"r");
    do
    {
     fscanf(fp,"%d",&gcode);
     fscanf(fp,"%s",gvalue);
    }
    while(gcode!=2||strcmp(gvalue,"ENTITIES")!=0);
    do
    {
        fscanf(fp,"%d",&gcode);
        fscanf(fp,"%s",gvalue);
        if(gcode==0&&strcmp(gvalue,"LINE")==0)outline();
    }
    while(gcode!=0||strcmp(gvalue,"ENDSEC")!=0);
    fclose(fp);
    return 0;
}
int outline()
{
    do{fscanf(fp,"%d",&gcode);
        if(gcode==10)
        {i=i+1;
        fscanf(fp,"%f",&xs[i]);
        }
        else
        fscanf(fp,"%s",gvalue);
        }while(gcode!=10);
        fscanf(fp,"%d",&gcode);
        fscanf(fp,"%f",&ys[i]);
        fscanf(fp,"%d",&gcode);
        fscanf(fp,"%f",&zs[i]);
        fscanf(fp,"%d",&gcode);
        fscanf(fp,"%f",&xe[i]);
        fscanf(fp,"%d",&gcode);
        fscanf(fp,"%f",&ye[i]);
        fscanf(fp,"%d",&gcode);
        fscanf(fp,"%f",&ze[i]);
        return 0;
        
}

/*****************************************************************************
**  Activation Methods
*****************************************************************************/
/*  Unigraphics Startup
**      This entry point activates the application at Unigraphics startup */
extern DllExport void ufsta( char *param, int *returnCode, int rlen )
{
    /* Initialize the API environment */
    if( UF_CALL(UF_initialize()) )
    {
        /* Failed to initialize */
        return;
    }
   
    /* TODO: Add your application code here */
void main ()
{
    int n;
    i=0;
    scanline();
    printf("Enter data file name:");
    scanf("%s",fname);
    fp=fopen(fname,"w");
    fprintf(fp,"%d\n",i);
    for(n=1;n<=i;n++)
    {      
      fprintf(fp,"%f,%f,%f\n",xs[n],ys[n],zs[n]);
      fprintf(fp,"%f,%f,%f\n",xe[n],ye[n],ze[n]);
    }
    fclose(fp);
}

    /* Terminate the API environment */
    UF_CALL(UF_terminate());
}

/*****************************************************************************
**  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 int ufusr_ask_unload( void )
{
    return( UF_UNLOAD_UG_TERMINATE );
}

下面是错误显示
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(113): error C2143: 语法错误 : 缺少“;”(在“类型”的前面)
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(122): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(122): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(122): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(124): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(124): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(124): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(125): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(125): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(125): error C2065: “n”: 未声明的标识符
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(131): error C2143: 语法错误 : 缺少“)”(在“字符串”的前面)
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(131): error C2143: 语法错误 : 缺少“)”(在“字符串”的前面)
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(131): error C2143: 语法错误 : 缺少“{”(在“字符串”的前面)
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(131): error C2059: 语法错误:“<未知>”
1>e:\2\nx8_open1\nx8_open1\nx8_open1.c(132): error C2059: 语法错误:“}”
1>
1>生成失败。
1>
1>已用时间 00:00:00.44
========== 生成: 成功 0 个，失败 1 个，最新 0 个，跳过 0 个 ==========

extern DllExport void ufsta(char *param, int *returnCode, int rlen)//函数里面定义函数？

extern DllExport void ufsta( char *param, int *returnCode, int rlen )
 {
     /* Initialize the API environment */
     if( UF_CALL(UF_initialize()) )
     {
         /* Failed to initialize */
         return ;//这里少了返回DllExport类型数据
     }