Little question about char convertion

Hello!
I've been using sprintf to convert a group of integers to a char sequence.
like this:
char st[];
int a=2,b=3;
sprintf(st,"%d and %d",a,b);
cout<<st;

it works good, but when trying to use char *st; instead of the array an error is thrown.
"Error while dumping state (probably corrupted stack)"
if sprintf receives a char * as first argument, shouldn't it work too?

Are you saying you replaced

Code:

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char st[];

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by

Code:

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char *st;

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You haven't allocated any memory for the variable - you need to do this in both cases. I think you are lucky in the first case.

Try

Code:

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char st[25] = {0}; // allow plenty of room

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or

Code:

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char *st = new char[25];

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or better yet use an STL string.

Regards
Alan

thanks for the info.
the error is gone when the initialization is used. in both cases