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modeÆäʵÊÇÒ»¸öconst char£¬ËùÒÔÐèÒªÒ»¸öchar*À´±£´æ£¬filenameÒ²Ò»Ñù°¡¡£
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *argv[])
{
  char filename[20],mode[5];
  FILE * fHandle = NULL;
  memset(filename,'\0',20);
  printf("input filename:");
  scanf("%s",filename);
  printf("\ninput mode string:");
  while(1)
  {
  memset(mode,'\0',5);
  scanf("%s",mode);
  /*For example:only need "w" mode for fopen */
  if(strcmp(mode,"w"))
  {
                      printf("invalid mode,please input again:\n");
                &nb


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C/C++ code:

char Time="2009-9-23";
FILE *fpOut=fopen("1.txt","w+");
if(fpOut==NULL)
return ;

fwr ......

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Perl code:
abc ~ # ifconfig
eth0 Link encap:Ethernet HWaddr 00:1e:ec:c1:94:75
inet addr:10.2.0.144 Bcast:10.2.1.255 Mask:255.255.254.0
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