Fwd: [avr-gcc-list] C Escape sequence.

[dimax un]

The plain old ANSI C has option of putting octal numbers in strings like \ooo.

For example: "Hello\007World" is actually: {'h' 'e' 'l' 'l' 'o' 0x07 'W' 'o' 'r' 'l' 'd' 0x00}

It is less nice but much more portable.

 

 

On 6/13/06, Joerg Wunsch <address@hidden > wrote:

"justin joseph" < address@hidden> wrote:

>> const char messg[] PROGMEM= "Temp=   \xdf" "C";

> should'nt the array be declared as const unsigned char

Definately not.  The data type of a character is "char", the data type
of a character string literal is "const char *".  For printable
characters, signedness does not matter.  The standard leaves it open
whether the data type "char" is signed or unsigned (and for GCC, you
can decide yourself using -fsigned-char or -funsigned-char).

--
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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