MESSAGE
| DATE | 2010-02-19 |
| FROM | Ruben Safir
|
| SUBJECT | Subject: [NYLXS - HANGOUT] C Programming and Modern Approach question
|
Hello Dr King,
I'm reviewing your text while assigning it for a class in NYC
and my students and I are looking at an inconsistancy in the section on
inmplicit type conversion. Your text in the first edition, on page 127
says that integer promotion promotes from
int -> unsigned int -> long -> unsigned long
Test this with GCC:
#include
long int x = -500;
unsigned long int y = 100;
int main(){
y = x + y;
printf("==> %li \n", y);
return 0;
}
The sign remains. If anything, the unsigned long sems to promote to
signed. If this an error in the text, a change in the C standard, or
percular to GCC
Ruben Safir
--
http://www.mrbrklyn.com - Interesting Stuff
ahttp://www.nylxs.com - Leadership Development in Free Software
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