how to pass input from c program to shell script?

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# 1  
Old 01-31-2012
Question how to pass input from c program to shell script?

I am developing a Graphical User Interface using GTK. As part of our project I need to take inputs from GTK entries and pass those inputs to shell script and use them in shell script. The problem which struck me is only limited number of inputs are getting passed to shell script. For now only 15 characters are being accepted. I think there is a problme in passing the inputs from gtk program to shell script.
I used the following code to link up gtk program and shell script

void dadd(GtkWidget *widget, gpointer label)
char str[512];
int x;
sprintf(str,"sh %s",charadd1);


Here "" is the shell script to which he inputs have to be passed and in charadd1 the values entered in gui entry filed will be stored. I also tried increasing the size of str bt it dint work.
# 2  
Old 01-31-2012
give a try..

sprintf(str,"\"sh %s\"",charadd1);

---------- Post updated at 09:36 AM ---------- Previous update was at 09:33 AM ----------

or you can read about the popen function

popen function
This User Gave Thanks to itkamaraj For This Post:
# 3  
Old 01-31-2012
Thank you for your reply.. ok.. I'l try it.. but what is the meaning of the changes which you suggested?
# 4  
Old 01-31-2012
If you quote the arguments, then you can easily read the big string as $1 inside the shell script.

$ cat
echo $1
$ ./ "ABC CDE FGG"

# 5  
Old 01-31-2012
Sory it's not working.. It's returning the error "command not found"
# 6  
Old 01-31-2012
show your code

---------- Post updated at 10:11 AM ---------- Previous update was at 10:10 AM ----------

before executing the system function, print and verify what str has

printf ("%s\n",str);

# 7  
Old 01-31-2012
Ok I will.. Can I mail you the code?
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