高手的难题

famous · 发表于 2003-4-2 14:27:03

共有四个问题：关于kdevelop 关于输出内容(dir_demo1.c dir_demo2.c) 关于输出内容(main.c

dir_demo2.c) 关于定义
共有三个文件：main.c dir_demo1.c dir_demo2.c

问题一：在kdevelop怎么把main.c等文件输入成为一个工程而不用新建工程在每一个文件中输入（我没有

找到相关命令）
问题二：为仕么dir_demo1 dir_demo2仅定义的不同导致输出的不同
问题三：dir()作为main的接口却不能输出东西，提示错误segmentation fault;
问题四：为仕么dir_demo1中我将结构变量定义在char字符定义上就会导致是么东西都不能输出而出现

segmentation fault;

输出内容（问题二）dir_demo1 segmentation fault ;
dir_demo2 当前目录的内容；（正确的）；
输出内容（问题三）main.c dir.c两个文件最后输出内容为当前目录的内容最后还带了一个segmentation

fault；
输出内容（问题四）dir_demo1 输出为segmentation fault，但是如果我把char定义和structure定义倒

过来放就
想dir.c中一样他会只输出当前目录的内容最后还带了一个segmentation fault

famous · 发表于 2003-4-2 14:27:39

/***************************************************************************
                        dir.c  -  description
                           -------------------
begin             : Wed Apr 2 2003
copyright          : (C) 2003 by root
email             : [email protected]
***************************************************************************/

/***************************************************************************
*                                                                      *
* This program is free software; you can redistribute it and/or modify  *
* it under the terms of the GNU General Public License as published by  *
* the Free Software Foundation; either version 2 of the License, or    *
* (at your option) any later version.                                  *
*                                                                      *
***************************************************************************/
#include <sys/stat.h>
#include <unistd.h>
#include <ftw.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>

int dir(char* ccdir)
{
char*cp;
//char* ppb;
char* cp1="<DIR>";
char* cp2=" ";
int d_s1,d_s2,f_s1,f_s2;//d_s1 is how many directories; d_s2 is how many bytes in

directory; f_s1 is how many files;f_s2 is how may bytes in file
//char* gcd;

  DIR* apa;
struct dirent* rpr;
struct stat* sa;
struct tm* ppa;

d_s1=0;
d_s2=0;
f_s1=0;
f_s2=0;

cp=(char *)malloc(sizeof(char)*100);
//ppb=(char *)malloc(sizeof(char)*100);
//gcd=get_current_dir_name();
//printf("%s",ccdir)
if((apa=opendir(ccdir))==NULL)
{
printf("can't print directory name\n");
}
while((rpr=readdir(apa))!=NULL)
{
stat(rpr->d_name,sa);

if((sa->st_mode)==16877)
{
//cp="<DIR>";
strcpy(cp,cp1);
d_s1+=1;
d_s2+=sa->st_size;
}
else
{
//cp=" ";
strcpy(cp,cp2);
f_s1+=1;
f_s2+=sa->st_size;
}
ppa=localtime(&(sa->st_mtime));
//ppb=ctime(&(sa->st_mtime));
printf("%d-%d-%d

%d:%d",(1900+ppa->tm_year),(1+ppa->tm_mon),ppa->tm_mday,ppa->tm_hour,ppa->tm_min);
printf("%d          %s             %s\n",sa->st_size,cp,rpr->d_name);

}
printf("Total Directories:%d direcories       Total bytes:%d bytes\n",d_s1,d_s2);
printf("Total Files:%d files       Total bytes:%d bytes\n",f_s1,f_s2);

closedir(apa);
free(cp);
//free(ppa);
//free(ppb);

return 0;

famous · 发表于 2003-4-2 14:29:45

前面dir.c漏了一个}本来有的，paste时漏了，不好意思
/***************************************************************************
                        dir_demo1.c  -  description
                           -------------------
begin             : Wed Apr 2 2003
copyright          : (C) 2003 by root
email             : [email protected]
***************************************************************************/

/***************************************************************************
*                                                                      *
* This program is free software; you can redistribute it and/or modify  *
* it under the terms of the GNU General Public License as published by  *
* the Free Software Foundation; either version 2 of the License, or    *
* (at your option) any later version.                                  *
*                                                                      *
***************************************************************************/
#include <sys/stat.h>
#include <unistd.h>
#include <ftw.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>

int main()
{

DIR* apa;
struct dirent* rpr;
struct stat* sa;
struct tm* ppa;

char*cp;
char* ppb;
char* cp1="<DIR>";
char* cp2=" ";
int d_s1,d_s2,f_s1,f_s2;//d_s1 is how many directories; d_s2 is how many bytes in

directory; f_s1 is how many files;f_s2 is how may bytes in file
char* gcd;

d_s1=0;
d_s2=0;
f_s1=0;
f_s2=0;

cp=(char *)malloc(sizeof(char)*100);
//ppb=(char *)malloc(sizeof(char)*100);
gcd=get_current_dir_name();
//printf("%s",ccdir)
if((apa=opendir(gcd))==NULL)
{
printf("can't print directory name\n");
}
while((rpr=readdir(apa))!=NULL)
{
stat(rpr->d_name,sa);

if((sa->st_mode)==16877)
{
//cp="<DIR>";
strcpy(cp,cp1);
d_s1+=1;
d_s2+=sa->st_size;
}
else
{
//cp=" ";
strcpy(cp,cp2);
f_s1+=1;
f_s2+=sa->st_size;
}
ppa=localtime(&(sa->st_mtime));
//ppb=ctime(&(sa->st_mtime));
printf("%d-%d-%d

%d:%d",(1900+ppa->tm_year),(1+ppa->tm_mon),ppa->tm_mday,ppa->tm_hour,ppa->tm_min);
printf("%d          %s             %s\n",sa->st_size,cp,rpr->d_name);

}
printf("Total Directories:%d direcories       Total bytes:%d bytes\n",d_s1,d_s2);
printf("Total Files:%d files       Total bytes:%d bytes\n",f_s1,f_s2);

closedir(apa);
free(cp);
//free(ppa);
//free(ppb);

return 0;
}

famous · 发表于 2003-4-2 14:30:32

/***************************************************************************
                        main.c  -  description
                           -------------------
begin             : Wed Apr  2 13:29:16 CST 2003
copyright          : (C) 2003 by root
email             : [email protected]
***************************************************************************/

/***************************************************************************
*                                                                      *
* This program is free software; you can redistribute it and/or modify  *
* it under the terms of the GNU General Public License as published by  *
* the Free Software Foundation; either version 2 of the License, or    *
* (at your option) any later version.                                  *
*                                                                      *
***************************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
  char* gcd;
  gcd=get_current_dir_name();
  dir(gcd);
  return EXIT_SUCCESS;
}

famous · 发表于 2003-4-2 14:44:56

另外在dir.c或dir_demo1.c或dir_demo2.c中的
printf("%d %s %s\n",sa->st_size,cp,rpr->d_name);
在kdevelop中都会出现
warning:int format ,_off_t arg(arg2)
警告！这句话什么意思？

famous · 发表于 2003-4-3 09:21:30

问题达到解决，只要将sa定义为结构变量即可，错误原应是由于结构指针没有赋予内存空间所导致，谢谢 Zark(金陵五月）的帮组，在此再次感谢，希望以后继续探讨相关问题

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