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author | zlg <zlg@zlg.space> | 2013-02-13 20:48:44 -0600 |
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committer | zlg <zlg@zlg.space> | 2013-02-13 20:48:44 -0600 |
commit | 5018e06c580dd21c958ec1672c26a3448faf0c55 (patch) | |
tree | cebbb56dad0a6b821cad3712c7977f6f9b0086ab /1-20_detab.c | |
parent | Fix 1-09's solution (diff) | |
download | knr-5018e06c580dd21c958ec1672c26a3448faf0c55.tar.gz knr-5018e06c580dd21c958ec1672c26a3448faf0c55.tar.bz2 knr-5018e06c580dd21c958ec1672c26a3448faf0c55.tar.xz knr-5018e06c580dd21c958ec1672c26a3448faf0c55.zip |
Add license file, reorganize project
Diffstat (limited to '1-20_detab.c')
-rw-r--r-- | 1-20_detab.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/1-20_detab.c b/1-20_detab.c deleted file mode 100644 index dc8f5b5..0000000 --- a/1-20_detab.c +++ /dev/null @@ -1,48 +0,0 @@ -#include <stdio.h> - -/* The C Programming Language: 2nd Edition - * Exercise 1-20: - * "Write a program `detab` that replaces tabs in the input with the proper - * number of blanks to space to the next tabstop. Assume a fixed set of - * tabstops, say every 'n' columns. Should 'n' be a variable or a symbolic - * parameter?" - * - * Answer: 'n' should be a symbolic parameter. It's more apparent what's being - * worked with and it's not susceptible to scope. Though, in this simple - * program it really doesn't matter. - * - * The "correct" solution uses the isprint() stdlib function, but it's not - * covered by this point in the book, so I did not use it. - */ - -#define TABWIDTH 8 - -int main(void) { - int column, c; - column = 0; - while ((c = getchar()) != EOF) { - // Be sure that the character is a tab - if (c == '\t') { - /* - * Divide a line by TABWIDTH and you have your tabstops. If you - * modulo by TABWIDTH and it equals 0, you've reached a tabstop and - * don't need to output more spaces! - */ - while (column % TABWIDTH != 0 && column != 0) { - putchar(' '); - ++column; - } - } else { - if (c == '\n') { - // Line-endings should reset the column counter after being output. - putchar(c); - column = 0; - } else { - // Now we can just output and increase column! - putchar(c); - ++column; - } - } - } - return 0; -} |