fopen

[Gregorina]

Hello,

Thank you very much for taking time from your busy schedule to help me out. I'm using the following code:

FILE* file;
file = fopen("logg.txt", "rb");
int DemonicRainbowUnicorn = sizeof(file);

file in the debugger gets a Bad Ptr. No matter what file i try to open, the size of the file is always 4. I've tried googling this quite a bit but non of the articles I found helped. Again thank you very much for the help.

Greg

[2kaud]

file is a pointer to a type FILE. On a 32 bit system, therefore the size of file will always be 4 as pointers are 32 bits. Are you using c or c++? You haven't posted the headers you are using. If you want to know how many bytes there are in the file use

#include <stdio.h>

int main()
{
FILE* fp;

long size;

	fp = fopen("debug.txt", "rb");
	if (fp == NULL) {
		puts("Problem opening file");
	} else {
		fseek(fp, 0, SEEK_END);
		size = ftell(fp);
		printf("size is %li\n", size);
	}

	return 0;
}

If you are using c++, I strongly suggest you use the c++ stream classes for i/o.

[Gregorina]

Thank you very much. I am now reading up on stream classes. I hope you have a great day.