Checking if a string is null

[veenasheela]

A string can be checked if it is empty using the following code

if (strlen (string) = 0)

But, instead of using strlen, how to determine if a string is empty using the first character of the string

[kky2k]

A string can be checked if it is empty using the following code

if (strlen (string) = 0)

But, instead of using strlen, how to determine if a string is empty using the first character of the string

Though u didn't posted it inside CODE tags i pointed out a common mistake...

instead of ...

if(strlen(string) == 0)

u was mentioned its as..

 if(stlen(string) = 0)

And regarding ur question..Accor ding to me its not possible using the first character

[sicarie]

Though u didn't posted it inside CODE tags i pointed out a common mistake...

instead of ...

if(strlen(string) == 0)

u was mentioned its as..

 if(stlen(string) = 0)

And regarding ur question..Accor ding to me its not possible using the first character

If it's a C string it is, the first char will be the null terminator '\0'.

If it's not a C string, it's dependent on the programmer to have initialized it as "null" (I think - I'm not sure of any other way to directly check this).

[weaknessforcats]

But, instead of using strlen, how to determine if a string is empty using the first character of the string

The C string is empty if the first byte is equal to '\0', a null terminator. This does not work for the C++ string class.