Programming

Hello

I am finishing an intro to C programming, the next to last chapter is giving me a problem here is my code:

Code:

#include <stdio.h>

int main (int argc, const char * argv[]) {
	FILE	*fp;
	int	c;
	
	fp = fopen( "../Five", "r" );
	
	if ( NULL == fp ) {
        printf( "Error opening ../My Data File" );
    } else {
		while ( (c = fgetc( fp )) != EOF )
			putchar( c );
		
		fclose( fp );
	}
	
	return 0;
}

I have also tried, ~/Five , and ../..Five . The file is located on my hard drive. What is wrong?

Not sure what your problem is. I cut/pasted your code and it works without a problem. Are you sure that the file Five is in the parent directory when you execute the binary?

It can also be helpful to print the error associated with the failure if the file cannot be opened:

Code:

#include <errno.h>
:
:
printf( "error opening input: %s\n", strerror( errno ) );

it posts the same error, "error opening ../mydatafile" i am using xcode for mac i do not know too much about commands to call the files, the file titled "five" is a .rtf file. "../" should call the hard disk right?

The notation ../ indicates that the file is in the parent directory, rather than the current (or present) working directory.

Assuming you are running this from the command line (terminal), then you can test for the presence of the file with this command line command:

Code:

ls -al ../five

If that results in a file not found message, try removing the ../ to see if it is in the current directory. If it is, then remove those from your string in the C programme.

You don't need xcode to compile these simple C programs. It's really overkill. gcc filename.c -o filename ; ./filename

I'm on the right track now, I just need to study more.