c program help

[munna_dude]

hi all
i have to write some script in c program
i tried this

//cc simple.c -o simple
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void)
{

char bb=system("cat file.txt | sed -n '/Underlying Value/,/]Top/p' | egrep -v 'Underlying Value|]Top' | sed 's/\[[0-9]\{1,\}\]//g' > /home/munna/Desktop/munna.txt");
printf("******** %s \n",bb);

  return 0;
}

and the file.txt is

[1]Home > [2]F&O >
Watch

All contracts of NIFTY
As on Hours IST

Instrument Type Underlying Expiry Date Option Type High
Price Low Prev Close of contracts traded
Turnover Lakhs Underlying Value

[5]AAAAA [6]GGGGGG [7]25OC200 - - 5389.80 5203.10 5673.15 5255.00
89085 234115.83 5143.90
[8]AAAAA [9]GGGGGG [10]29NO2007 - - 5389.00 5211.00 5674.00 5269.95
5265 13869.14 5143.90
[11]BBBBBB [12]GGGGGG [13]25OC200 [14]CE [15]5600.00 74.00 15.00
168.60 34.05 810 2281.01 5143.90
[16]AAAAA [17]GGGGGG [18]27DE200 - - 5410.00 5125.00 5664.05 5265.00
694 1828.64 5143.90

[243]Top

[1]http://www.google.com/
[2]http://www.google.com/
[7]http://www.google.com/
[79]http://www.yahoo.com/
[2447]http://www.google.com/
[700]http://www.yahoo.com/

but this program saying some errors like

simple.c:9: warning: unknown escape sequence '\}'
simple.c:9: warning: unknown escape sequence '\]'

i wanna output in a string "bb".

please help me

thank you in advance

[Lakshmipathi]

char bb=system("cat file.txt | sed -n '/Underlying Value/,/]Top/p' | egrep -v 'Underlying Value|]Top' | sed 's/\[[0-9]\{1,\}\]//g' > /home/munna/Desktop/munna.txt");

bb is an not an string array.
Use string array.

[munna_dude]

char bb=system("cat file.txt | sed -n '/Underlying Value/,/]Top/p' | egrep -v 'Underlying Value|]Top' | sed 's/\[[0-9]\{1,\}\]//g' > /home/munna/Desktop/munna.txt");

bb is an not an string array.
Use string array.

it is ok...
am asking about the errors..
just compile the code , u may know the fault in the program...

can you please correct my program (rewrite)

thank you in advance

[Lakshmipathi]

you are getting warning not an error so try with string array.
try adding another \ near { ...I'm not sure this is an root cause ,

system("cat file.txt | sed -n '/Underlying Value/,/]Top/p' | egrep -v 'Underlying Value|]Top' | sed 's/\[[0-9]\\{1,\\}\\]//g' > /home/munna/Desktop/munna.txt");

[likwid]

I haven't tried to compile it, but your main problem is that system returns an exit status, not a string. If what you want is the contents of that output file to be inside your program, you'd run that system() then you would use fopen to open the file, and fread to get the contents into a character array.