strcat and three strings

[alternativa]

Hi,
I have a following problem: I'm creating a list and one of the fields
should contain the date. Firstly I ask the user for the year, month and
day and then I'd like to collect all this data in one field. To do this
I tried to concatenate those 3 numbers into one using strcat. A piece
of code is as follows

/*function to enter the date*/
char * date (void)
{
long year; /* it must of a long type */
long month; /* because of some other reasons*/
long day;
char *str1;
char *str2;
char *str3;
char *str4;

/*here are the functions collecting the data from the input*/

str1 = strcat (year,'-');
str2 = strcat (str1, month);
str3 = strcat (str2,'-');
str4 = strcat (str3,day);

return str4;
}

I think the result should be "year-month-day".. Why it doesn't work?

[Ico]

Re: strcat and three strings

alternativa <alternativa.4@ wp.pl> wrote:[color=blue]
> I have a following problem: I'm creating a list and one of the fields
> should contain the date. Firstly I ask the user for the year, month and
> day and then I'd like to collect all this data in one field. To do this
> I tried to concatenate those 3 numbers into one using strcat. A piece
> of code is as follows
>[/color]
[...][color=blue]
>
> I think the result should be "year-month-day".. Why it doesn't work?[/color]

My first suggestion is that you did not allocate any space for your
data, you only defined the pointers. Please post a complete program
instead of only a snippet.

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:wq
^X^Cy^K^X^C^C^C ^C