From 82d318879c897b3d665767d74806cd33fe6791c0 Mon Sep 17 00:00:00 2001 From: zlg Date: Tue, 23 Apr 2013 13:33:25 -0500 Subject: Add exercise descriptions and answers for ch1 * Corrected behavior in solutions for 1-9 and 1-23 --- ch1/1-18_strip-blanks.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'ch1/1-18_strip-blanks.c') diff --git a/ch1/1-18_strip-blanks.c b/ch1/1-18_strip-blanks.c index c766445..947ce8d 100644 --- a/ch1/1-18_strip-blanks.c +++ b/ch1/1-18_strip-blanks.c @@ -1,8 +1,16 @@ #include +/* The C Programming Language: 2nd Edition + * + * Exercise 1-18: Write a program to remove trailing blanks and tabs from each + * line of input, and to delete entirely blank lines. + * + * Answer: Simple -- start from the end of the line and look for a non-blank + * character. Once found, place your \n and \0 just afterwards. By checking + * that 'i' > 1, it ensures that blank lines never get spit out, since a line + * with content will always be 2 or more characters long due to the \n. + */ #define MAXLINELENGTH 9001 -/* Write a program to remove trailing blanks and tabs from each line of input, - and to delete entirely blank lines. */ int get_line(char s[], int lim) { int c, i; @@ -24,7 +32,10 @@ int main(void) { /* Make sure every line is gone over */ while (len = get_line(buffer, MAXLINELENGTH)) { - /* An empty for statement, simply to change the i variable. */ + /* An empty for statement, simply to change the i variable. + * Subtracting 2 from 'len' is to account for 0-based indexing and the \0 + * string terminator. + */ for (i = len - 2; (i > 0) && (buffer[i] == ' ') || (buffer[i] == '\t'); --i); /* We've reached the end of the line's actual content. Terminate the line. */ -- cgit v1.2.3-70-g09d2 ='id' value='9da20483b8aa26a3090093212d007e6dc756b2d2'/>
path: root/src/vgstash (unfollow)
AgeCommit message (Expand)AuthorFilesLines
2018-10-06cli: Add "delete" commandzlg1-0/+9
2018-10-06Remove ID field from DBzlg3-38/+46
2018-10-06cli: change "Status" heading to "Progress"zlg2-36/+40
2018-09-29Bump to 0.3alpha5 for PyPIzlg1-1/+1
2018-09-29cli: Add pretty printing to 'list' commandzlg3-17/+107
2018-09-08setup.py: Bump to alpha4 for PyPIzlg1-1/+1
2018-09-08cli: add '--raw' option to list commandzlg2-9/+45
2018-09-08Add remaining filters to vgstash packagezlg1-2/+11
2018-09-04Update LICENSE to match setup.pyzlg1-80/+67
2018-09-03Branch off from master with pytest, tox, clickzlg16-778/+779
2018-03-18Flesh out filter types and ownership statuszlg3-82/+144
2018-03-18README.mdown: break line correctlyzlg1-1/+1
2018-03-18add 'playlog' list filterzlg2-2/+9
2018-03-13Update helpers a bitzlg1-2/+9
2018-03-13Make VGSTASH_DB_LOCATION point to a filezlg2-21/+20
2016-11-18Remove settings from helpers.shZe Libertine Gamer1-5/+0
2016-11-15Correct phrasing in README.Ze Libertine Gamer1-4/+4
2016-11-13DerpZe Libertine Gamer1-0/+1
2016-11-03Improve error handling in shell scriptsZe Libertine Gamer4-3/+23
2016-10-24Correct run_again, add recursionZe Libertine Gamer1-0/+4
2016-10-21Add quotes to correct behavior for arglistZe Libertine Gamer1-1/+1
2016-10-14updater.sh: add recursion, error handlingZe Libertine Gamer1-43/+101
2016-10-14Correct pipe-handling behaviorZe Libertine Gamer1-1/+9
2016-10-12Clarify a method to move between platformsZe Libertine Gamer1-2/+5