Compilation error

Hi showbix,

I presume you meant not compiling in ANSI C but compiling in "normal" C

1. in C all declarations must precede the first statement...
To be more specific declarations are allowed only at the beginning of a "block"

2. you cannot assign strings like a=b ... nor can you compare them like a==b ... you have to use strcpy and strcmp respectively

http://www.cs.cf.ac.uk/Dave/C/CE.html
is a good tutorial

Cheers!
Sunny:o)

just noticed that you were not assigning strings there ... just  pointer manipulation ... that will work fine once search_str is declared properly ...

move char * search_str to the beginning of the function and everything should work well.

>> 1. in C all declarations must precede the first statement...

But Sunny, that was old.... the latest accepted standard C99 overrides it. It is now legal in C to declare variables anywhere in a program, in any block. However, all compilers don't support it as yet.

> It is now legal in C to declare variables anywhere in a program, in any block.
Nope mayank ... Variables can be declared only at the *beginning* of a block
C++ permits you to declare variables anywhere in the program but C still requires declarations to be at the beginning of a block

Ok, sorry I got confused with program and block :-), so I thought that you were wrong.

Anyways, Sunny, pls comment on: https://www.experts-exchange.com/questions/20816080/Please-participate.html

sorry mayank ... I do not have much idea about java or .net
I am still limited to C and linux

ok, no worries :-)

Hey guys,
Let me explain what I need to achieve here.

I read the data using recv function and insert it into buf variable
---------------------------------------------------------------------
char buf[100];


if ((numbytes=recv(new_fd, buf, 100-1, 0)) == -1) {
   perror("recv");
   exit(1);
}

buf[numbytes] = '\0';
printf("Received: %s\n",buf);

char *search_str = buf;

if (strstr(search_str,"SUCCESS") != NULL)
{
  printf("SUCCESS found\n");
}
  else
{
  printf("SUCCESS not found\n");
}

---------------------------------------------------------------------
I tried to copy the buf value into search_str so that I can perform the sub-string search.
From search_str variable I would like to scan a sub-string (e.g SUCCESS).

The code above works fine in ANSI C compiler but it throw me erros when using normal C Compiler.
The error is at this line --- char *search_str = buf;

Putting the declaration "char *search_str = buf;" at the beginning of function will need me to put another statement(which I dont know) to copy the buf value into the search_str variable.
 

How do I rectify it so that the program works?

FYI, I'm in the UNIX environment.

On second thought:

char buf[100] ;
char * search_str = buf ;

if ((numbytes=recv(new_fd, buf, 100-1, 0)) == -1) {
   perror("recv");
   exit(1);
}

buf[numbytes] = '\0';
printf("Received: %s\n",buf);

// because 'buf' will always have the same base address,so it can be assigned to search_str right at the start, after declaration.