Reading data from file

[mvm2008]

Hello,

I have a rather simple program, which reads a string from file and stores it in a char array. While reading the file, each line is saved in the array properly, but when I exit the loop and print the array again, it prints only the last entry. There is probably something silly that I have not taken into account, but I am not able to figure it out.

Here is the code:

#include <stdio.h>

int main(int argc, char ** argv)
{
  char **input_list;
  int num_list=0;
  char temp_list[1024] ="";
  char line[4096];
  FILE *wlist = NULL;
  if (argc<=1)
    {
      fprintf(stderr, "Usage: {-list <File listing the strings> \n", argv[0]);
      exit(-1);
    }

  while(argc>1)
   if (strcmp(argv[1], "-list")==0) 
      {
	fprintf(stdout, "foo\n");
	input_list = (char **)calloc(4096, sizeof(char *));
	
	if ((wlist = fopen(argv[2], "r"))!=NULL)
	  {
	   
	    num_list = 0;
	    while(fgets(line, sizeof(line), wlist)!=NULL)
	      {
		sscanf(line, "&#37;s", &(temp_list));
		input_list[num_list]= (char *)calloc(4096, sizeof(char));
		input_list[num_list]= (temp_list);
		fprintf(stdout, "Read string %s\n",input_list[num_list]);
		num_list++;
	      }
	    input_list[num_list] = NULL;
	   
	    fclose(wlist);
	    fprintf(stdout, "Read %d strings\n", num_list);
	   
	  }
	argc--;argv++;
	argc--;argv++;
      }
   
 int i;

 for(i=0;i<num_list;i++)
    {
      fprintf(stdout, "String %s\n", input_list[i]);
    }

 free(input_list);
}

The input list file looks like this:
"a"
"b"
"c"
"d"

And the output is:
foo
Read waveform "a"
Read waveform "b"
Read waveform "c"
Read waveform "d"
Read 4 waveforms
Waveform "d"
Waveform "d"
Waveform "d"
Waveform "d"


When I reprint the input_waveforms_list array, it prints the last line that it read for four times. Kindly let me know what is wrong with the code or a better way to write it.
Thanks.

[tabstop]

I don't see a strcpy anywhere.

[Salem]

> input_waveforms_list[num_waveforms]= (temp_waveforms_list);
This points to your array (which you only have one of, hence everything is the same in the end).

[mvm2008]

Thanks for your suggestions. The problem is fixed.