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Full Discussion: read from file using forks
Top Forums Programming read from file using forks Post 302111279 by ddx08 on Tuesday 20th of March 2007 12:49:49 PM
Old 03-20-2007
this is what i have now still no idea why is doesn't work

Code:
#include <stdio.h>
#include <fcntl.h>
main( )
{
	FILE *fileptr;
	char temp1[100];
	char buff2[20];
	int pid2;
	FILE * fileptr1;
	fileptr1 = fopen("file1.txt","rt");
	pid2=fork();
	printf("%i",getpid());
	printf("just created \n");
	while(1)		
	{
		printf("%i",getpid());
		printf("in the while loop\n");
		fscanf(fileptr1,"%s",temp1);
		if(feof(fileptr1)==0)
		{
			printf("%i",getpid());	//id of current process 
			printf(" Read: ");
			printf("%s",temp1);	//what was just read
			printf("\n");
			sleep(5);		
		}
	else
		break;
	}
}

this was the output
Code:
26017just created 
26017in the while loop
26017 Read: m+n
26016just created 
26016in the while loop
26017in the while loop
26017 Read: o+p
26017in the while loop
26017 Read: q+r+s
26017in the while loop
26017 Read: a+b+c+d
26017in the while loop

 

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LEARN ABOUT DEBIAN

qrencode

QRENCODE(1)						      General Commands Manual						       QRENCODE(1)

NAME

       qrencode - Encode input data in a QR Code and save as a PNG or EPS image.

SYNOPSIS

       qrencode [OPTION]...  [STRING]

DESCRIPTION

       Libqrencode  is	a  library  for encoding data in a QR Code symbol, a kind of 2D symbology that can be scanned by handy terminals such as a
       mobile phone with CCD. The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.

       Qrencode is a utility software using libqrencode to encode string data in a QR Code and save as a PNG or EPS image.

OPTIONS

       -h, --help
	      display help message.

       -o FILENAME, --output=FILENAME
	      write image to FILENAME. If '-' is specified, the result will be output to standard output. If -S is given, structured  symbols  are
	      written to FILENAME-01.png, FILENAME-02.png, ... (suffix is removed from FILENAME, if specified)

       -s NUMBER, --size=NUMBER
	      specify the size of dot (pixel). (default=3)

       -l {LMQH}, --level={LMQH}
	      specify error collectin level from L (lowest) to H (highest). (default=L)

       -v NUMBER, --symversion=NUMBER
	      specify the version of the symbol. (default=auto)

       -m NUMBER, --margin=NUMBER
	      specify the width of margin. (default=4)

       -d NUMBER, --dpi=NUMBER
	      specify the DPI of the generated PNG. (default=72)

       -t {PNG,EPS,ANSI,ANSI256}, --type={PNG,EPS,ANSI,ANSI256}
	      specify the type of the generated image. (default=PNG)

       -S, --structured
	      make structured symbols. Version must be specified.

       -k, --kanji
	      assume that the input text contains kanji (shift-jis).

       -c, --casesensitive
	      encode lower-case alphabet characters in 8-bit mode. (default)

       -i, --ignorecase
	      ignore case distinctions and use only upper-case characters.

       -8, --8bit
	      encode entire data in 8-bit mode. -k, -c and -i will be ignored.

       -M, --micro
	      encode in a Micro QR Code. (experimental)

       -V, --version
	      display the version number and copyrights of the qrencode.

       [STRING]
	      input data. If it is not specified, data will be taken from standard input.

EXAMPLES

       qrencode -l L -v 1 -o output.png 'Hello, world!'
	      encode into a symbol version 1, level L.

       qrencode -iSv 1 --output=output.png
	      read standard input and encode it into a structured-appended symbols in case-insensitive mode.

AUTHOR

       Written by Kentaro Fukuchi.

RESOURCES

       Main Web Site: http://fukuchi.org/works/qrencode/

       Source code repository: https://github.com/fukuchi/libqrencode/

COPYRIGHT

       Copyright (C) 2006-2012 Kentaro Fukuchi.

qrencode 3.3.0							   Feb. 29, 2012						       QRENCODE(1)
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