Hai cercato la traduzione di sizeof da Russo a Inglese

sizeof
sizeof

sizeof(char));
sizeof(char));

sizeof(listnode));
sizeof(listnode));

$n = sizeof ( $m [ 0 ]);
$n = sizeof ( $m [ 0 ]);

memset(&att,0,sizeof(att));
memset(&att,0,sizeof(att));

fillchar(ncb, sizeof(tncb), #0);
result := 0; exit; end;

memset(str,0x0,sizeof(str));
memset(str,0x0,sizeof(str));

zeromemory(@exeinfo, sizeof(tstringfileinfow));
memreport.lines.add(format(reportload, [appname]));

getplayerip (playerid, ip, sizeof (ip));
getplayerip (playerid, ip, sizeof (ip));

puts((const char*)&data, sizeof(int));
puts((const char*)&data, sizeof(int));

zeromemory( &hints, sizeof(hints) );
zeromemory( &hints, sizeof(hints) );

fillchar(netbiosinfo, sizeof(tnetbiosinfo), #0);
fdictlength := 0; setlength(fdict, fdictlength);

puts((const char*)&data, sizeof(float));
puts((const char*)&data, sizeof(float));

p=(quenenode *) malloc(sizeof(quenenode));
p=(quenenode *) malloc(sizeof(quenenode));

getclientname ( iclient , sauth , sizeof ( sauth ));
setfailstate ( "rankingtypelookupfailed(norows)" );

tpacketparamadc(void){ tpacket(ptsetparam,sizeof(*this));}
tpacketparamadc(void){ tpacket(ptsetparam,sizeof(*this)) ;}

cvfindcontours( gray, storage, &contours, sizeof(cvcontour),
cvfindcontours( gray, storage, &contours, sizeof(cvcontour),

cudamemcpyfromsymbol(&founded_, founded, sizeof(int), 0, cudamemcpydevicetohost);
cudamemcpyfromsymbol(&founded_, founded, sizeof(int), 0, cudamemcpydevicetohost);

format ( tname , sizeof ( tname ), "target%i" , ent )
format(dname, sizeof(dname), "dis_%d", edict);

Поскольку типы данных могут иметь различные размеры, а malloc возвращает пространство в байтах это хорошая практика из соображений портируемости использовать оператор sizeof, указывая размер выделения.
as data types have different sizes, and malloc returns the space in bytes, it is good practice for portability reasons to use the sizeof operator when specifying a size to allocate.