[ale] C and segmentation fault

[c_fowler at hotmail.com]

How can I join string S2 and S1 ont S1 so that s1 looks like 'S1S2'.

Thanks,
Christopher Fowler

On 17-Jul-97 Tom Wiencko wrote:
>c_fowler at hotmail.com wrote:
>> 
>> Why when I run this proggie do I get a segmentation fault?
>> 
>#include<stdio.h>
>#include<string.h>
>main()
>{
>        char *s1;
>        char *s2;
>        s1="S1";
>        s2="S2";
>        s2=strcat(s1,s2);
>        return 0;
>}
>
>Very simple.  The line "s2=strcat(s1,s2)" is causing strcat to
>try to physically overwrite the read-only memory space where "S2"
>lives.  When you assigned s2="S2" you are pointing s2 to an address
>in an area where only constants are supposed to live.  You cannot
>modify things in that address space.
>
>-Tom
>----------------------------------------------------------------------
>Tom Wiencko                                            tew at wiencko.com
>President - Wiencko & Associates, Inc.

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E-Mail:  c_fowler at hotmail.com
Date: 17-Jul-97
Time: 13:50:07

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