How to get string from front of array to position x?

[Angus]

Hi

If I want to eg print a string from position 3 to the end of the
string I can do this:
char szMessage[] = "Hello World";
printf("string fragment: %s\n", szMessage+5);

But if I just want to print "Hello" how can I do it. I can make a
copy but what other way to do this?

Angus

 

[Willem]

Angus wrote:
) If I want to eg print a string from position 3 to the end of the
) string I can do this:
) char szMessage[] = "Hello World";
) printf("string fragment: %s\n", szMessage+5);
)
) But if I just want to print "Hello" how can I do it. I can make a
) copy but what other way to do this?

The width/precision specifiers for the printf formats work on strings
as well. (Note that there are two specifiers, separated by a dot.)
As a bonus, you can use * for a specifier, and then give the value
in the argument list.


SaSW, Willem
--
Disclaimer: I am in no way responsible for any of the statements
made in the above text. For all I know I might be
drugged or something..
No I'm not paranoid. You all think I'm paranoid, don't you !
#EOT

 

[Eric Sosman]

Hi

If I want to eg print a string from position 3 to the end of the
string I can do this:
char szMessage[] = "Hello World";
printf("string fragment: %s\n", szMessage+5);

That would print from position 5 (the ' ') onward, not position 3.

But if I just want to print "Hello" how can I do it. I can make a
copy but what other way to do this?

One way is to use the "precision" modifier in the format:

printf ("string fragment: %.5s\n", szMessage);

The ".5" instructs printf() to print no more than 5 characters,
even if the argument string is longer. (If it's shorter, printf()
will print the entire string.)

 

[lawrence.jones]

If I want to eg print a string from position 3 to the end of the
string I can do this:
char szMessage[] = "Hello World";
printf("string fragment: %s\n", szMessage+5);

Actually, that's position 5 (or 6, depending on how you count).

But if I just want to print "Hello" how can I do it. I can make a
copy but what other way to do this?

printf("string fragment: %.5s\n", szMessage);

Don't you have a reference that includes printf format specifiers?