segmention fault >> culprit is isdigit() c library function call

lm ch2-13.c /* USER NAME : vartan * DATE STARTED : Wed Jul 01 19:28:34 2009 * * COMPILE COMMAND : gcc -ansi --version -Wall -o ch2-13.out-lm ch2-13.c */ /* INCLUDE FILES */ #include #include #include #include /* PREPROCESSOR CONSTANTS */ int main(void){ /* start of main */

segmentation fault isdigit() cuasing the problem.

lm ch2-13.c gcc (Debian 4.3.2-1.1) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc /* USER NAME : vartan * DATE STARTED : Wed Jul 01 19:28:34 2009 * * COMPILE COMMAND : gcc -ansi --version -Wall -o ch2-13.out-lm ch2-13.c */ /* INCLUDE FILES */ #include #include #include #i