Debug Assertion Failed!

[jerry]

i have a problem:
when i run a program,it pop up a windows,title is
microsoft visual c++ failed!
contents are:
program: ...io\myprojects\phonebook\debug\phonebook.exe
file:fopen.c
line:54
expression: *file !=_T('\0')
for information on how your program can cause an assertion failure,see
the visual c++ doucmention on asserts.
(please retry to debug the application)
abort(A) retry(R) ignore(I)

can someone give me a suggestion ,where's the fopen.c what dose
*file !=_T('\0') mean,and where can
i get documentation on asserts?
ps. befor it occures,my program run at :
if (!fout.is_open ())
{
cerr << "Can't open file: " << fileName;
exit(EXIT_FAILURE);
}
and if i select ignore
the cmd windows display Can't open filepress any key
to continue.
thanks a lot!

[peter koch]

On 21 Aug., 17:36, jerry <[e-mail]:

i have a problem:
when i run a program,it pop up a windows,title is
microsoft visual c++ failed!
contents are:
program: ...io\myprojects\phonebook\debug\phonebook.exe
file:fopen.c
line:54
expression: *file !=_T('\0')
for information on how your program can cause an assertion failure,see
the visual c++ doucmention on asserts.
(please retry to debug the application)
abort(A) retry(R) ignore(I)

can someone give me a suggestion ,where's the fopen.c *what dose
*file !=_T('\0') mean,and where can
i get documentation on asserts?
ps. befor it occures,my program run at :
* * * * if (!fout.is_open ())
* * * * {
* * * * * * * * cerr << "Can't open file: " << fileName;
* * * * * * * * exit(EXIT_FAILURE);
* * * * }
and *if i select ignore
the cmd windows display Can't open filepress any key
to continue.
thanks a lot!

It tells you that you have passed a string of length 0 (the first
character is \0) as the filename to fopen.
assert should be described in your favourite C/C++ book - if it is
not, use google.

/Peter