3 replies to this topic

[Moudi]

I need to copy the text from 1.txt to 2.txt without erasing the content of 2.txt
Now i came out with this simple code.

#include<stdio.h>

int main(void)

{

	FILE *file, *file2;

	file=fopen("1.txt", "rb");

	file2=fopen("2.txt", "wb");

	char c;

    while ((c=fgetc(file))!=EOF)

    {

        fputc(c, file2);

    }

fclose(file);

fclose(file2);

}

But its erasing the original content of 2.txt, i want it to keep it and write + it.
Is there some sort of way to make the loop begin from the EOF ?

[Xility]

Hi,

If you want to append the content from 1.txt to 2.txt, then you should set the mode of the second fopen to "ab" instead of "wb".

file2=fopen("2.txt", "ab");

For more information about the different modes look here

Edited by Xility, 26 January 2010 - 05:51 AM.
For some reason the link messed up

[Moudi]

Alright thanks ! it worked :)

[dcs]

Moudi said:

	[COLOR="red"]char [/COLOR]c;

    while ((c=fgetc(file))!=EOF)

You should declare c as an int.
Cprogramming.com FAQ > Definition of EOF and how to use it effectively