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Diffstat (limited to 'usr.bin/learn/lib/C/L40.1a')
| -rw-r--r-- | usr.bin/learn/lib/C/L40.1a | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/usr.bin/learn/lib/C/L40.1a b/usr.bin/learn/lib/C/L40.1a new file mode 100644 index 00000000000..a5d67001df4 --- /dev/null +++ b/usr.bin/learn/lib/C/L40.1a @@ -0,0 +1,56 @@ +#print +Write a subroutine + errmess(n) +which looks at its argument and prints +one of the following messages: + n message (follow it by a newline) + 1 ? + 2 syntax error + 3 bad syntax error + 4 fatal error + 5 I give up. +anything else eh? +Leave the routine on errmess.c, compiled and tested +as usual. Then type "ready". +#once #create Ref +eh? +eh? +I give up. +fatal error +bad syntax error +syntax error +? +#once #create tzaqc.c +main() +{ + errmess (23069); + errmess (-2000); + errmess (5); + errmess (4); + errmess (3); + errmess (2); + errmess (1); +} +#user +cc tzaqc.c errmess.o +a.out >xxx +#cmp Ref xxx +#succeed +/* a possible solution */ +char *message[] = { + "eh?", + "?", + "syntax error", + "bad syntax error", + "fatal error", + "I give up.", + }; +errmess(n) +{ + if (n < 0 || n > 5) + n = 0; + printf("%s\n", message[n]); +} +#log +#next +41.1a 10 |