How to read from a text file?
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Hi Friends, I have developed a dialog based MFC programm. I want to read a text file which contains some encrypted characters....File may be long or may be short. My problem is I don't know how to read that whole file as right now I use fread() functions to read file in which it terminates when it gets some character even if there are still more data in file. Also I tried to read it using a character by character reading by fgetc(). Still I encounter the same problem. Is there a way to read whole file till the end of file. And all characters are read. Any function or any example ? Thankx in advance. Mahesh
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Hi Friends, I have developed a dialog based MFC programm. I want to read a text file which contains some encrypted characters....File may be long or may be short. My problem is I don't know how to read that whole file as right now I use fread() functions to read file in which it terminates when it gets some character even if there are still more data in file. Also I tried to read it using a character by character reading by fgetc(). Still I encounter the same problem. Is there a way to read whole file till the end of file. And all characters are read. Any function or any example ? Thankx in advance. Mahesh
Amarelia wrote:
I use fread() functions to read file in which it terminates when it gets some character even if there are still more data in file
fread() reads a specified number of bytes, and doesn't look at the characters at all: // read 100 bytes FILE *fp = fopen(filename, "rb"); BYTE buf[100]; int read = fread(buf, 1, 100, fp); fclose(fp); if you want to read the whole file, just keep calling fread(..) until it returns 0 (no bytes read). Cleek | Image Toolkits | Thumbnail maker
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Hi Friends, I have developed a dialog based MFC programm. I want to read a text file which contains some encrypted characters....File may be long or may be short. My problem is I don't know how to read that whole file as right now I use fread() functions to read file in which it terminates when it gets some character even if there are still more data in file. Also I tried to read it using a character by character reading by fgetc(). Still I encounter the same problem. Is there a way to read whole file till the end of file. And all characters are read. Any function or any example ? Thankx in advance. Mahesh
i think you problem may come from you write in a buffer not large enough. do this : 1. get the number of characters in the file to be exctracted. 2. allocate your buffer with that number of bytes. 3. read() the totality of the file ; it will never overflow the buffer (considering the memory is correctly allocated)
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Hi Friends, I have developed a dialog based MFC programm. I want to read a text file which contains some encrypted characters....File may be long or may be short. My problem is I don't know how to read that whole file as right now I use fread() functions to read file in which it terminates when it gets some character even if there are still more data in file. Also I tried to read it using a character by character reading by fgetc(). Still I encounter the same problem. Is there a way to read whole file till the end of file. And all characters are read. Any function or any example ? Thankx in advance. Mahesh
Amarelia wrote:
...it terminates when it gets some character...
Is it encountering an EOF character? If so, you need to open the file as binary, not text.
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