文字列リテラルの大きさを表示する

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文字列リテラルの大きさを表示する

C

#include <stdio.h>

int main(int argc, char* argv[])

{

    printf("sizeof(\"123\") = %u\n", (unsigned)sizeof("123"));

    printf("sizeof(\"AB\\tC\") = %u\n", (unsigned)sizeof("AB\tC"));

    printf("sizeof(\"abc\\0def\") = %u\n", (unsigned)sizeof("abc\0def"));
    return 0;

}

実行結果

R:\>lesson068\Project1.exe

sizeof("123") = 4

sizeof("AB\tC") = 5

sizeof("abc\0def") = 8

Delphi

program Project1;
{$APPTYPE CONSOLE}
uses

    SysUtils;
procedure main();

begin

    Writeln(Format('sizeof("123") = %d', [SizeOf('123')]));

    Writeln(Format('sizeof("AB\tC") = %d', [SizeOf('AB'#9'C')]));

    Writeln(Format('sizeof("abc\0def") = %d', [SizeOf('abc'#0'def')]));

    Writeln('');
    Writeln(Format('sizeof("123") = %d', [Length('123')]));

    Writeln(Format('sizeof("AB\tC") = %d', [Length('AB'#9'C')]));

    Writeln(Format('sizeof("abc\0def") = %d', [Length('abc'#0'def')]));

end;
begin

    main;

end.

実行結果

S:\>lesson068\Project1.exe

sizeof("123") = 4

sizeof("AB\tC") = 4

sizeof("abc\0def") = 4
sizeof("123") = 3

sizeof("AB\tC") = 4

sizeof("abc\0def") = 7

Perl

$n = length("123");
print "length('123') = $n \n";

実行結果

L:\>perl lesson_09_068.pl

length('123') = 3

Ruby

n = "123".length
print "length('123') = #{n} \n"

n = "123".size
print "size('123') = #{n} \n"

実行結果

L:\>ruby  l:\lesson_09_068.rb

length('123') = 3

size('123') = 3