Thread: forgotten how to print values :(

version gcc 2.95.3
SunOS 5.6

Hi,

I have the following snippet

Code:

    if (!(seq_filename = (char *)getenv(SEQ_FILE)))
printf("before error_func %s\n", seq_filename);
/* printf("before error_func %s\n", (char *)getenv(SEQ_FILE)); */
        error_func("In get_seq_no().",
                   "Environment variable SEQUENCE_FILE not set.",
                    SYS | FATAL);
printf("failure: \n");
    strcpy(seq_identifier, identifier);

and the if test is failing, my problem is, I don't seem to be able to trap what values exist when it falls over.

I don't have access to gdb which is why I am using printf's at the mo

Could someone show me how to print the values of a

static char * seq_filename
#define SEQ_FILE "SEQUENCE_FILE"



tia,

ty for your reply Salem

Code:

   /* if test */
   if (!(seq_filename = (char *)getenv(SEQ_FILE)))
   {
      /* first of two printf statements */
      printf("before error_func %s\n", seq_filename);
      printf("before error_func %s\n", (char *)getenv(SEQ_FILE));

      /* function call if test is true */
      error_func("In get_seq_no().",
                 "Environment variable SEQUENCE_FILE not set.",
                  SYS | FATAL);
   )
   /* another printf statement */
   printf("failure: \n");

   /* doesn't make  it here while blowing up */
   strcpy(seq_identifier, identifier);

from what little I know, the test either passes or fails, it cannot do both !

I do not see anything printed, because I am using these two printf statements incorrectly

printf("before error_func %s\n", seq_filename);
printf("before error_func %s\n", (char *)getenv(SEQ_FILE));

which is why I would like to know how to get the values that exist in these two items

Hi Salem,

I have got away to prove what's in the ENV

Code:

$ cat my_getenv.c
#include <stdio.h>
#include <stdlib.h>

char *my_getenv(char* name)
{
   char *result;
   result = getenv(name);

   if(NULL == result)
      printf("my_getenv, environment variable, is not set\n");
   return result;
}

int main()
{
   char *test;
   test = my_getenv("SEQ_FILE");

   if(NULL == test)
      printf("the environment variable is NULL\n");
   else
      printf("the environment variable is : %s\n", test);
}

thanks for your help