How to list text files and html files in a folder using c program?

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Hi,

How can i display all the text files and html files in a folder or a directory using if statement? I am using C code for developing this, could someone help me on this?.

This is a sample code i have developed.

int main(void)
{
    DIR *d;
    struct dirent *dir;
    d = opendir("/home/sosdt009/database/assigncodes/pure c code");
    if (d)
    {
        while ((dir = readdir(d)) != NULL)
        {
	    if(dir=".txt")
		{
            printf("%s\n", dir->d_name);
	    }
	   else if (dir = ".html")
		{
		  printf("%s\n", dir->d_name);
		 }
	   else 
		{
        	printf( "NO file\n" );     /* Executed if no other statement is */
    		}
	}
        closedir(d);
    }
    return(0);
}

Posted 22-Dec-15 18:21pm

venkat28vk

Updated 22-Dec-15 19:55pm

v2

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Comments

Sergey Alexandrovich Kryukov 23-Dec-15 1:12am

How to query a database using switch statement? How print a picture using try-catch block? :-)
If you think it's not funny, re-read the title of your question...
—SA

venkat28vk 23-Dec-15 1:58am

@ Sergey. I am sorry for the above. The main objective is to list text files and html files in a folder using C code. How can i achieve the above?

Sergey Alexandrovich Kryukov 23-Dec-15 2:39am

Please, no need to be sorry. You just need to present problems clearly. On step at a time. First, you need to tag your platform. Is it Linux? Then you need to explain what "display" do you need? Just file names, or content. If content... HTML files are "displayed" (rendered) by a Web browser. So, what do you want to do with them? What's the problem, exactly?

If the behavior of your code does not match what you expected, use the debugger and fix it. If you failed to do so, describe what did you want to achieve, what's expected behavior, what is observed behavior, why do you feel it's wrong. If you have some exceptions, describe steps to reproduce, complete exception information. Comment the points in code related to exception throwing/propagation. Post all what's relevant. See also: http://www.sscce.org.

—SA

venkat28vk 23-Dec-15 3:45am

@sergey. I am using Ubunutu. I need to display only file names. The files will be sent from php to C using tcp/ip, i need to display only the file names of html and text files. Can you give me some code on this.

Sergey Alexandrovich Kryukov 23-Dec-15 11:32am

Now, what problems did you face? Please see the comment by Richard MacCutchan below, fix this point...
—SA

Richard MacCutchan 23-Dec-15 4:07am

if(dir=".txt")
That is wrong in so many ways; you need to go back to your C reference manuals and study the language.

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Arthur V. Ratz · Accepted Answer · 2015-12-31T23:12:00

Probably, this would work:

C++

#include <stdio.h>
#include <string.h>
#include <dir.h>

int main()
{
    struct ffblk f_info;
    int finish = findfirst("*.exe", &f_info, FA_RDONLY| FA_ARCH);
    for(; finish == 0; finish = findnext(&f_info));
    {
        char* extension = NULL;
        if ((!(f_info.ff_attrib & FA_DIREC)) &&
            (extension = strchr(f_info.ff_name,'.') + 1) != NULL)
        {
            if (!strcmp(extension,"txt") || !strcmp(extension,"html"))
                printf("%s\n",f_info.ff_name);
        }       
    }
}</dir.h></string.h></stdio.h>

Here's the link [^] to the findfirst, findnext functions documentation

That's all. If it works, just let me know.