Re: Why crash ?
"Polaris" <etpolaris@hotmail.com> wrote in message
news:ewiZpQtpGHA.1548@TK2MSFTNGP04.phx.gbl...
Hi Experts:
I have a a few lines of code and it crashes everytime at the line marked
below. The code just converts a string into upper case string. Any help is
appriciated.
Thanks In Advance!
Polaris
-----------------------------------------------------
#include <iostream>
#include <string>
using namespace std;
int main (int argc, wchar_t *argv[])
{
wchar_t *str = L"abcdefghijklmn";
// transfer str to upper case
wstring sUpper;
int len = (int) wcslen (str);
for (int i=0; i<=len; i++)
sUpper[i] = towupper (str[i]); // crash here when i = 11
return 0;
}
As others said, thats because you don't have any chars allocated in sUpper.
What I would do is just change it to:
for (int i = 0; i < len; i++)
sUpper += towupper (str[i]);
Notice that I corrected it to i < len (arrays in C and C++ are zero bound).
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