Fundamentals of CS I (CS151 2001S) : Reference

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char-upcase - convert a letter to uppercase

Procedurechar-upcase
Parametersc, a character
PurposeIf c is lowercase, returns the uppercase version of c. Otherwise, returns c.
ProducesA character.
PreconditionsOnly one parameter (verified).
c is a character (verified).
PostconditionsThe result is a character.
The result is not a lowercase letter.
Does not affect c.
Examples
> (char-upcase #\a)
#\A
> (char-upcase #\A)
#\A
> (char-upcase #\3)
#\3
> (char-upcase #\space)
#\space
> (char-upcase #\a #\b)
char-upcase: expects 1 argument, given 2: #\a #\b
> (char-upcase 3)
char-upcase: expects argument of type <character>; given 3
> (define ch #\a)
> ch
#\a
> (char-upcase ch)
#\A
> ch
#\a
See Also
  char-downcase

"..." (double quote) | + (plus) | #\character (pound backslash) | #\newline | #\space | ; (semicolon) * (times) | abs | and | append | boolean? | car | cdr | char? | char<? | char<=? | char=? | char>=? | char>? | char-alphabetic? | char-ci<? | char-ci<=? | char-ci=? | char-ci>? | char-ci>=? | char->integer | char-downcase | char-lower-case? | char-numeric? | char-upper-case? | char-upcase | char-whitespace? | complex? | cons | eq? | equal? | eqv? | exact? | exact->inexact | exp | expt | inexact? | integer? | integer->char length | list | list? | list-ref | null | null? | number? | procedure? rational? | real? | reverse sqrt | string? | symbol?

[Current] [Discussions] [Glance] [Honesty] [Instructions] [Links] [News] [Search] [Syllabus] Primary
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[Blackboard] [Scheme Report] [SamR's Schedule] [Rebelsky/Fall 2000] [Walker/Fall2000] [Stone/Spring2000] Links

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The source was last modified Sun Feb 4 20:57:06 2001.