If first printf prints out the first character ('a') and then increments b to 's' such that the second printf prints out 's' and again decrements b to 'a', then isn't the third printf supposed to print out 'a'...Code:#include<stdio.h> #include<string.h> void sort(char *b[]); int main() { char *b = "asdfjh"; char c; printf("\n%c ",*b++); printf("\n%c ",*b--); printf("\n%c ",*b); }
Yep.
It is too clear and so it is hard to see.
A dunce once searched for fire with a lighted lantern.
Had he known what fire was,
He could have cooked his rice much sooner.
...why is it not happening??
It works for me:
C code - 16 lines - codepad
It is too clear and so it is hard to see.
A dunce once searched for fire with a lighted lantern.
Had he known what fire was,
He could have cooked his rice much sooner.
hi..
in *b++,in which * and ++ have same precedence but associativity is from right to left.
so *b++,incrementing is done after ; in the line..and b now a pointer containing the starting address of "asfdj".so taking star will give you the 1st element ie a.
in next line the b value is incremented due to the post increment in the previous ,so that you will get output as 's'. after which your post decrement is happening.so that in next printf you get 'a' output..
wonder if somethings wrong with my pelles C...
works in MSVC 2010...
"oops..." has it right.
Out of curiosity, what did pelles C do with it?
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
output with pelles c (or, atleast, "my pelles C"):Originally Posted by MK27
a
s
(blank)
Hmm... just in case you misread the output, try:
Code:#include<stdio.h> int main(void) { const char *b = "asdfjh"; printf("%c ", *b++); printf("%c ", *b--); printf("%c\n", *b); return 0; }
Look up a C++ Reference and learn How To Ask Questions The Smart Way
This time....
a s (blank)
Is it happening only with me, or is it the same for anyone who uses pelles C....
it works fine with my pelles c !
On trying it here in Pelles C (650 rc4 x64)...
Go into Project -> Project Options -> Compiler -> Optimizations = None
Then it will work without warnings.
However... the code itself is probably what the picky police here would call "undefined behaviour" since you are messing with the root pointer to a string...
what laserlight said. with some standard libraries you have to have a line feed to flush the output buffer or it won't print. gcc on linux is that way. don't know about pelles on windows
Thanks... Its working now.. I wonder what was wrong.
