Why segmentation(coredump) in the following code in C? Post: 302530204

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Top Forums Programming Why segmentation(coredump) in the following code in C? Post 302530204 by AAKhan on Monday 13th of June 2011 08:44:58 AM

06-13-2011

Registered User

Why segmentation(coredump) in the following code in C?

hi
I have a method which returns char*. In this method am using switch case. I am getting segmentation error in case 49 and my code is

Code:

case 49:
          if(intFlag == 0210)
          {
                iiIDCode = atoi(getsubstring(sReq,262,2));
                l = atoi(getsubstring(sReq,26+2+iiIDCode,3));
                iiTemp = 26+2+iiFIDCode+l+3;
                j = atoi(getsubstring(sReq,iiTemp,3));
                k  = atoi(getsubstring(sReq,iiTemp+j+3,3));
                fprintf(fp,"\nCurrency Code Transaction:\t\t[%s]",getsubstring       (sReq,iiTemp+j+k+3+3,3));
                strcat(cRes,getsubstring(sReq,iiTemp+j+k+3+3,3));;
          }
         else if(intFlag == 110)
         {
          }   
break;

getsubstring is a method am using to substring the string and it is working fine. If i remove if and else part it is working fine but if i add if else condition in case 49: it is throwing error Segmentation Coredump. Why? What could be the error? How to solve this?
Thanks

AAKhan

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LEARN ABOUT PLAN9

atol

ATOI(3) 						     Linux Programmer's Manual							   ATOI(3)

NAME

       atoi, atol, atoll - convert a string to an integer

SYNOPSIS

       #include <stdlib.h>

       int atoi(const char *nptr);
       long atol(const char *nptr);
       long long atoll(const char *nptr);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       atoll():
	   __ISOC99_SOURCE ||
	       || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

DESCRIPTION

       The atoi() function converts the initial portion of the string pointed to by nptr to int.  The behavior is the same as

	   strtol(nptr, NULL, 10);

       except that atoi() does not detect errors.

       The atol() and atoll() functions behave the same as atoi(), except that they convert the initial portion of the string to their return type
       of long or long long.

RETURN VALUE

       The converted value.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +------------------------+---------------+----------------+
       |Interface		| Attribute	| Value 	 |
       +------------------------+---------------+----------------+
       |atoi(), atol(), atoll() | Thread safety | MT-Safe locale |
       +------------------------+---------------+----------------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, C99, SVr4, 4.3BSD.  C89 and POSIX.1-1996 include the functions atoi() and atol() only.

NOTES

       Linux libc provided atoq() as an obsolete name for atoll(); atoq() is not provided by glibc.

SEE ALSO

       atof(3), strtod(3), strtol(3), strtoul(3)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU
								    2016-03-15								   ATOI(3)