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author | zlg <zlg@zlg.space> | 2013-04-23 13:33:25 -0500 |
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committer | zlg <zlg@zlg.space> | 2013-04-23 13:33:25 -0500 |
commit | 82d318879c897b3d665767d74806cd33fe6791c0 (patch) | |
tree | a3d2f41ef4e1d11136a3088784c59c604c20e47d /ch1/1-19_reverse-lines.c | |
parent | Solve Exercise 3-6: itoa (3 arg version) (diff) | |
download | knr-82d318879c897b3d665767d74806cd33fe6791c0.tar.gz knr-82d318879c897b3d665767d74806cd33fe6791c0.tar.bz2 knr-82d318879c897b3d665767d74806cd33fe6791c0.tar.xz knr-82d318879c897b3d665767d74806cd33fe6791c0.zip |
Add exercise descriptions and answers for ch1
* Corrected behavior in solutions for 1-9 and 1-23
Diffstat (limited to 'ch1/1-19_reverse-lines.c')
-rw-r--r-- | ch1/1-19_reverse-lines.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ch1/1-19_reverse-lines.c b/ch1/1-19_reverse-lines.c index d87b625..f92c6fa 100644 --- a/ch1/1-19_reverse-lines.c +++ b/ch1/1-19_reverse-lines.c @@ -1,5 +1,24 @@ #include <stdio.h> +/* The C Programming Language: 2nd Edition + * + * Exercise 1-19: Write a function reverse(s) that reverses the character + * string 's'. Use it to write a program that reverses its input a line at a + * time. + * + * Answer: This is really just as simple as using get_line() and reverse() in + * tandem. I guess the point of this exercise is to teach the reader how to + * combine the use of functions to get more complex behavior out of a program. + * + * My version includes the size of the string in the argument list instead of + * duplicating effort that get_line() does, since it already puts the contents + * into a string and returns the length of the string for me. For strict + * passing of this exercise, reverse() should really only have one argument + * and it should count the size of the string before it works with it. But + * that's prone to issues, such as a string that hasn't been terminated + * properly. + */ + #define MAXLINELENGTH 9001 int get_line(char s[], int limit) { |