compiling shell programs
 

hi
friends i have just installed fedora 17 on a vmware player.But,when i try to run shell program,it is showing
error as "unexpected token near symbol '('" and " int main()". so,how to correct it.
can anyone help me?:confused:

First of all welcome to LQ
I guess you are from india , me too :)
Moving to your question , are you writing a 'C' program or shell script?(we call it shell script not shell program)
You are writing a c program and calling it a shell script
'C' program has main method shell scripts dont,to compile 'C' program..
open terminal go to your c program file directory using cd(change directory) then type
gcc filename.c
filename is your filename .
then if you got no errors
./a.out

To run shell script
type sh scriptname.sh

also read http://en.wikipedia.org/wiki/Shell_script

thanks for your help:)
But iam sure that im running shell script.
Here is the script
#include<stdio.h>
#include<unistd.h>
#include<sys/types.h>
pid_t pid;
int main()
{
pid=fork();
if(pid==0)
{
printf("child process\n");
printf("the child process is %d\n",getpid());
printf("the parent process is %d\n",getppid());
}
else
{
pid=wait(0);
printf("parent process\n");
printf("child process is %d\n",pid);
printf("the parent process is %d\n",getpid());
}
return 0;
}

Don't know from what your assumption of shell script comes, but what you just posted (please use [code][/code] tags when posting code or commands output) is C source code.
To execute it you need to compile it first as rhklinux suggested.
Shell scripts need not to be compiled, as they're interpreted.

Whatever you told that's right.
I agree and i used sh filename.sh only to run it.
But it is showing as given below:
line 5:syntax error near unexpected token '('
line 5:`int main()`

Please help me.:newbie:

How can you tell that what I told earlier is right if you're still trying to execute that C code as a shell script?
Let's try to make it more clear: the program you wrote is a C program and its suffix should be .c and not .sh.
C programs need to be compiled first, using a C compiler (gcc is the most widespread one on Linux).
If your program is inside file program.c, then
will compile your code to the executable program, if no errors occur (the -Wall flag makes the compiler print all warnings).
Your code is syntactically correct except for the
which should be
After the compilation completes successfully, you'll be able to run the program you just compiled with
Shell scripts are text files which are directly interpreted by the shell, so no compilation phase occurs.
This is an example shell script:
As you can see, the syntax is completely different from what you posted (no main, no includes, no ';' after instructions etc.).

Yes.I executed in the same way as u told.
I got correct output.
Thanks a lot:)