tAdd comments about typing speed calculation - typr - Typing practice program
HTML git clone git://git.z3bra.org/typr.git
DIR Log
DIR Files
DIR Refs
---
DIR commit 82b278d63cf3e06ef4cedc97757238945fcc4b50
DIR parent 5211c044e98da94d4eb1acacfe68854d27b25987
HTML Author: Willy Goiffon <contact@z3bra.org>
Date: Tue, 16 Mar 2021 17:31:30 +0100
Add comments about typing speed calculation
Diffstat:
M typr.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
---
DIR diff --git a/typr.c b/typr.c
t@@ -4,6 +4,22 @@
*
* Type the text that is under the cursor.
* The cursor will stop on errors, no need to backspace
+ *
+ *
+ * Typing speed can be calculated using the time(1) and wc(1) commands:
+ *
+ * $ time ./typr file.txt
+ * […]
+ * >> errors: 0
+ * 0m28.64s real 0m00.00s user 0m00.00s system
+ * ^^^^^ TIMESPENT
+ *
+ * $ wc -w file.txt
+ * 28 file.txt
+ * ^^ WORDCOUNT
+ *
+ * WPM = (WORDCOUNT * 60) / TIMESPENT
+ * ( 28 * 60) / 28.64 = 58 WPM
*/
#include <stdio.h>
t@@ -57,6 +73,9 @@ main(int argc, char *argv[])
f = argc > 1 ? fopen(argv[1], "r") : stdin;
+ if (!f)
+ return -1;
+
tty = open(_PATH_TTY, O_RDWR);
tcgetattr(tty, &term);
t@@ -77,7 +96,7 @@ main(int argc, char *argv[])
fclose(f);
close(tty);
- printf(">> errors: %d\n", tot);
+ fprintf(stderr, ">> errors: %d\n", tot);
return 0;
}